Convert CONFIG_SPL_NET_SUPPORT to Kconfig

Move this option to Kconfig and tidy up existing uses.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/configs/am335x_evm_usbspl_defconfig b/configs/am335x_evm_usbspl_defconfig
index e029717..c819384 100644
--- a/configs/am335x_evm_usbspl_defconfig
+++ b/configs/am335x_evm_usbspl_defconfig
@@ -9,6 +9,7 @@
 CONFIG_SPL_MTD_SUPPORT=y
 CONFIG_SPL_MUSB_NEW_SUPPORT=y
 CONFIG_SPL_NAND_SUPPORT=y
+CONFIG_SPL_NET_SUPPORT=y
 CONFIG_HUSH_PARSER=y
 CONFIG_CMD_BOOTZ=y
 # CONFIG_CMD_IMLS is not set
diff --git a/configs/am43xx_evm_ethboot_defconfig b/configs/am43xx_evm_ethboot_defconfig
index 4459e77..86c9a5b 100644
--- a/configs/am43xx_evm_ethboot_defconfig
+++ b/configs/am43xx_evm_ethboot_defconfig
@@ -7,6 +7,7 @@
 CONFIG_SPL_ETH_SUPPORT=y
 CONFIG_SPL_MTD_SUPPORT=y
 CONFIG_SPL_NAND_SUPPORT=y
+CONFIG_SPL_NET_SUPPORT=y
 CONFIG_SPL_NET_VCI_STRING="AM43xx U-Boot SPL"
 CONFIG_HUSH_PARSER=y
 CONFIG_CMD_BOOTZ=y
diff --git a/configs/pcm051_rev1_defconfig b/configs/pcm051_rev1_defconfig
index 249cccb..a187e07 100644
--- a/configs/pcm051_rev1_defconfig
+++ b/configs/pcm051_rev1_defconfig
@@ -14,6 +14,7 @@
 CONFIG_SPL=y
 CONFIG_SPL_ETH_SUPPORT=y
 CONFIG_SPL_NET_VCI_STRING="pcm051 U-Boot SPL"
+CONFIG_SPL_NET_SUPPORT=y
 CONFIG_HUSH_PARSER=y
 CONFIG_CMD_BOOTZ=y
 # CONFIG_CMD_IMLS is not set
diff --git a/configs/pcm051_rev3_defconfig b/configs/pcm051_rev3_defconfig
index b8b391d..e2a7549 100644
--- a/configs/pcm051_rev3_defconfig
+++ b/configs/pcm051_rev3_defconfig
@@ -14,6 +14,7 @@
 CONFIG_SPL=y
 CONFIG_SPL_ETH_SUPPORT=y
 CONFIG_SPL_NET_VCI_STRING="pcm051 U-Boot SPL"
+CONFIG_SPL_NET_SUPPORT=y
 CONFIG_HUSH_PARSER=y
 CONFIG_CMD_BOOTZ=y
 # CONFIG_CMD_IMLS is not set
diff --git a/configs/pengwyn_defconfig b/configs/pengwyn_defconfig
index 88c5a2b..02b44fc 100644
--- a/configs/pengwyn_defconfig
+++ b/configs/pengwyn_defconfig
@@ -14,6 +14,7 @@
 CONFIG_SPL_ETH_SUPPORT=y
 CONFIG_SPL_MTD_SUPPORT=y
 CONFIG_SPL_NAND_SUPPORT=y
+CONFIG_SPL_NET_SUPPORT=y
 CONFIG_SPL_NET_VCI_STRING="AM335x U-Boot SPL"
 CONFIG_HUSH_PARSER=y
 CONFIG_CMD_BOOTZ=y
diff --git a/include/configs/am335x_evm.h b/include/configs/am335x_evm.h
index 28fcbae..4431288 100644
--- a/include/configs/am335x_evm.h
+++ b/include/configs/am335x_evm.h
@@ -332,8 +332,6 @@
 /* disable EFI partitions and partition UUID support */
 #undef CONFIG_PARTITION_UUIDS
 #undef CONFIG_EFI_PARTITION
-/* General network SPL  */
-#define CONFIG_SPL_NET_SUPPORT
 #endif
 
 /* USB Device Firmware Update support */
diff --git a/include/configs/am335x_shc.h b/include/configs/am335x_shc.h
index 01e491a..2762d53 100644
--- a/include/configs/am335x_shc.h
+++ b/include/configs/am335x_shc.h
@@ -326,7 +326,6 @@
 
 #if defined CONFIG_SHC_NETBOOT
 #ifdef CONFIG_SPL_BUILD
-#define CONFIG_SPL_NET_SUPPORT
 #define CONFIG_ENV_IS_NOWHERE
 #undef CONFIG_ENV_IS_IN_MMC
 #endif
diff --git a/include/configs/am335x_sl50.h b/include/configs/am335x_sl50.h
index 8bd9136..80140e7 100644
--- a/include/configs/am335x_sl50.h
+++ b/include/configs/am335x_sl50.h
@@ -106,8 +106,6 @@
 /* disable EFI partitions and partition UUID support */
 #undef CONFIG_PARTITION_UUIDS
 #undef CONFIG_EFI_PARTITION
-/* General network SPL  */
-#define CONFIG_SPL_NET_SUPPORT
 #endif
 
 #if defined(CONFIG_EMMC_BOOT)
diff --git a/include/configs/am43xx_evm.h b/include/configs/am43xx_evm.h
index 0128e1f..67c3899 100644
--- a/include/configs/am43xx_evm.h
+++ b/include/configs/am43xx_evm.h
@@ -321,7 +321,6 @@
 #if defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_ETH_SUPPORT)
 #undef CONFIG_ENV_IS_IN_FAT
 #define CONFIG_ENV_IS_NOWHERE
-#define CONFIG_SPL_NET_SUPPORT
 #endif
 
 #define CONFIG_SYS_RX_ETH_BUFFER	64
diff --git a/include/configs/baltos.h b/include/configs/baltos.h
index 0c05864..3bce7a2 100644
--- a/include/configs/baltos.h
+++ b/include/configs/baltos.h
@@ -227,7 +227,6 @@
 /* USB gadget RNDIS */
 
 /* General network SPL, both CPSW and USB gadget RNDIS */
-/*#define CONFIG_SPL_NET_SUPPORT
 #define CONFIG_SPL_NET_VCI_STRING	"AM335x U-Boot SPL"*/
 
 #define CONFIG_SPL_LDSCRIPT		"$(CPUDIR)/am33xx/u-boot-spl.lds"
diff --git a/include/configs/bav335x.h b/include/configs/bav335x.h
index cfafc08..0a2ad52 100644
--- a/include/configs/bav335x.h
+++ b/include/configs/bav335x.h
@@ -464,8 +464,6 @@
 /* disable EFI partitions and partition UUID support */
 #undef CONFIG_PARTITION_UUIDS
 #undef CONFIG_EFI_PARTITION
-/* General network SPL  */
-#define CONFIG_SPL_NET_SUPPORT
 #endif
 
 /* USB Device Firmware Update support */
diff --git a/include/configs/draco.h b/include/configs/draco.h
index 302e189..04240c7 100644
--- a/include/configs/draco.h
+++ b/include/configs/draco.h
@@ -48,8 +48,6 @@
 
 #define CONFIG_SYS_U_BOOT_MAX_SIZE_SECTORS	0x300
 
-#undef CONFIG_SPL_NET_SUPPORT
-
 #undef CONFIG_MII
 #undef CONFIG_PHY_GIGE
 #define CONFIG_PHY_SMSC
diff --git a/include/configs/etamin.h b/include/configs/etamin.h
index f8eaf9b..fda18b2 100644
--- a/include/configs/etamin.h
+++ b/include/configs/etamin.h
@@ -106,8 +106,6 @@
 
 #define CONFIG_SYS_U_BOOT_MAX_SIZE_SECTORS	0x300
 
-#undef CONFIG_SPL_NET_SUPPORT
-
 #undef CONFIG_MII
 #undef CONFIG_PHY_GIGE
 #define CONFIG_PHY_SMSC
diff --git a/include/configs/pcm051.h b/include/configs/pcm051.h
index 1f56f97..80df353 100644
--- a/include/configs/pcm051.h
+++ b/include/configs/pcm051.h
@@ -121,7 +121,6 @@
 #define CONFIG_ENV_IS_NOWHERE
 
 #define CONFIG_SPL_YMODEM_SUPPORT
-#define CONFIG_SPL_NET_SUPPORT
 #define CONFIG_SPL_LDSCRIPT		"$(CPUDIR)/am33xx/u-boot-spl.lds"
 
 #ifdef CONFIG_SPI_BOOT
diff --git a/include/configs/pengwyn.h b/include/configs/pengwyn.h
index a2f6dab..40f9640 100644
--- a/include/configs/pengwyn.h
+++ b/include/configs/pengwyn.h
@@ -117,9 +117,6 @@
 #define CONFIG_SPL_POWER_SUPPORT
 #define CONFIG_SPL_YMODEM_SUPPORT
 
-/* General network SPL */
-#define CONFIG_SPL_NET_SUPPORT
-
 /* NAND support */
 #define CONFIG_CMD_NAND
 #define CONFIG_NAND_OMAP_GPMC
diff --git a/include/configs/pxm2.h b/include/configs/pxm2.h
index 03d7b9d..99a201c 100644
--- a/include/configs/pxm2.h
+++ b/include/configs/pxm2.h
@@ -42,8 +42,6 @@
 
 #define CONFIG_SYS_U_BOOT_MAX_SIZE_SECTORS	0x300
 
-#undef CONFIG_SPL_NET_SUPPORT
-
 #define CONFIG_PHY_ATHEROS
 
 #define CONFIG_FACTORYSET
diff --git a/include/configs/rastaban.h b/include/configs/rastaban.h
index 5e7f1eb..f8ed22a 100644
--- a/include/configs/rastaban.h
+++ b/include/configs/rastaban.h
@@ -51,8 +51,6 @@
 
 #define CONFIG_SYS_U_BOOT_MAX_SIZE_SECTORS	0x300
 
-#undef CONFIG_SPL_NET_SUPPORT
-
 #undef CONFIG_MII
 #undef CONFIG_PHY_GIGE
 #define CONFIG_PHY_SMSC
diff --git a/include/configs/rut.h b/include/configs/rut.h
index ed1315f..5f62358 100644
--- a/include/configs/rut.h
+++ b/include/configs/rut.h
@@ -37,8 +37,6 @@
 
 #define CONFIG_SYS_U_BOOT_MAX_SIZE_SECTORS	0x200
 
-#undef CONFIG_SPL_NET_SUPPORT
-
 #define CONFIG_PHY_NATSEMI
 
 #define CONFIG_FACTORYSET
diff --git a/include/configs/thuban.h b/include/configs/thuban.h
index b9c687a..8d7b280 100644
--- a/include/configs/thuban.h
+++ b/include/configs/thuban.h
@@ -44,8 +44,6 @@
 
 #define CONFIG_SYS_U_BOOT_MAX_SIZE_SECTORS	0x300
 
-#undef CONFIG_SPL_NET_SUPPORT
-
 #undef CONFIG_MII
 #undef CONFIG_PHY_GIGE
 #define CONFIG_PHY_SMSC