ARM: dts: omap3-evm: Enable DM and devicetree for TMDSEVM{3530, 3730}

This commit updates the configuration files needed to support OF_CONTROL
on the OMAP3 EVM baseboard.

Additionally:
- CONFIG_SYS_THUMB_BUILD is enabled
- CONFIG_SPL_ENV_SUPPORT is enabled

Tested using GCC 7.2.0 [--with-float=hard --with-mode=thumb].

Signed-off-by: Derald D. Woods <woods.technical@gmail.com>
diff --git a/arch/arm/mach-omap2/omap3/Kconfig b/arch/arm/mach-omap2/omap3/Kconfig
index 4dbf9a2..6d714f6 100644
--- a/arch/arm/mach-omap2/omap3/Kconfig
+++ b/arch/arm/mach-omap2/omap3/Kconfig
@@ -61,6 +61,10 @@
 
 config TARGET_OMAP3_EVM
 	bool "TI OMAP3 EVM"
+	select DM
+	select DM_SERIAL
+	select DM_GPIO
+	select OMAP3_GPIO_3
 
 config TARGET_OMAP3_IGEP00X0
 	bool "IGEP"
diff --git a/configs/omap3_evm_defconfig b/configs/omap3_evm_defconfig
index 5103e9f..d2b8d42 100644
--- a/configs/omap3_evm_defconfig
+++ b/configs/omap3_evm_defconfig
@@ -1,16 +1,18 @@
 CONFIG_ARM=y
-# CONFIG_SYS_THUMB_BUILD is not set
 CONFIG_ARCH_OMAP2PLUS=y
 CONFIG_SYS_TEXT_BASE=0x80100000
+CONFIG_TI_COMMON_CMD_OPTIONS=y
 CONFIG_SYS_MALLOC_F_LEN=0x2000
 CONFIG_SYS_MPUCLK=720
 CONFIG_TARGET_OMAP3_EVM=y
+CONFIG_DEFAULT_DEVICE_TREE="omap3-evm"
 CONFIG_DISTRO_DEFAULTS=y
 CONFIG_BOOTDELAY=3
 CONFIG_SYS_CONSOLE_INFO_QUIET=y
 CONFIG_DEFAULT_FDT_FILE="omap3-evm.dtb"
 CONFIG_VERSION_VARIABLE=y
 CONFIG_SPL=y
+CONFIG_SPL_ENV_SUPPORT=y
 CONFIG_SPL_SYS_MALLOC_SIMPLE=y
 # CONFIG_SPL_EXT_SUPPORT is not set
 CONFIG_SPL_MTD_SUPPORT=y
@@ -35,6 +37,7 @@
 # CONFIG_ISO_PARTITION is not set
 # CONFIG_EFI_PARTITION is not set
 CONFIG_SPL_PARTITION_UUIDS=y
+CONFIG_OF_CONTROL=y
 CONFIG_ENV_IS_IN_NAND=y
 CONFIG_DM=y
 CONFIG_SPL_DM=y
diff --git a/include/configs/omap3_evm.h b/include/configs/omap3_evm.h
index 89159a3..d95ccdf 100644
--- a/include/configs/omap3_evm.h
+++ b/include/configs/omap3_evm.h
@@ -42,8 +42,6 @@
 #define CONFIG_SYS_NS16550_COM1         OMAP34XX_UART1
 #if defined(CONFIG_SPL_BUILD)
 #undef CONFIG_SYS_NS16550_REG_SIZE
-#else /* !CONFIG_SPL_BUILD  */
-#define CONFIG_SYS_NS16550_REG_SIZE     (-1)
 #endif /* CONFIG_SPL_BUILD */
 
 /* NAND */
@@ -86,8 +84,6 @@
 /* Environment */
 #define CONFIG_PREBOOT                  "usb start"
 
-#if !defined(CONFIG_SPL_BUILD)
-
 #include <config_distro_defaults.h>
 
 #define MEM_LAYOUT_ENV_SETTINGS \
@@ -182,6 +178,4 @@
 		"bootm ${loadaddr} - ${fdtaddr}\0" \
 	BOOTENV
 
-#endif /* !CONFIG_SPL_BUILD */
-
 #endif /* __CONFIG_H */