ata: Migrate CONFIG_FSL_SATA to Kconfig

Use 'imply' here liberally to avoid the combinatorial explosion of
defconfig changes in the PowerPC boards.

Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
diff --git a/arch/powerpc/cpu/mpc85xx/Kconfig b/arch/powerpc/cpu/mpc85xx/Kconfig
index 1b0e3d3..5df8175 100644
--- a/arch/powerpc/cpu/mpc85xx/Kconfig
+++ b/arch/powerpc/cpu/mpc85xx/Kconfig
@@ -92,6 +92,7 @@
 # Use DDR3 controller with DDR2 DIMMs on this board
 	select SYS_FSL_DDRC_GEN3
 	imply CMD_SATA
+	imply FSL_SATA
 
 config TARGET_MPC8541CDS
 	bool "Support MPC8541CDS"
@@ -148,6 +149,7 @@
 	select SUPPORT_SPL
 	select SUPPORT_TPL
 	imply CMD_SATA
+	imply FSL_SATA
 
 config TARGET_P1023RDB
 	bool "Support P1023RDB"
@@ -230,6 +232,7 @@
 	select BOARD_LATE_INIT if CHAIN_OF_TRUST
 	select PHYS_64BIT
 	imply CMD_SATA
+	imply FSL_SATA
 
 config TARGET_QEMU_PPCE500
 	bool "Support qemu-ppce500"
@@ -244,6 +247,7 @@
 	select PHYS_64BIT
 	imply CMD_EEPROM
 	imply CMD_SATA
+	imply FSL_SATA
 
 config TARGET_T1023RDB
 	bool "Support T1023RDB"
@@ -642,6 +646,7 @@
 	imply CMD_SATA
 	imply CMD_PCI
 	imply CMD_REGINFO
+	imply FSL_SATA
 
 config ARCH_P1011
 	bool
@@ -826,6 +831,7 @@
 	imply CMD_NAND
 	imply CMD_SATA
 	imply CMD_REGINFO
+	imply FSL_SATA
 
 config ARCH_P4080
 	bool
@@ -887,6 +893,7 @@
 	select FSL_ELBC
 	imply CMD_SATA
 	imply CMD_REGINFO
+	imply FSL_SATA
 
 config ARCH_P5040
 	bool
@@ -910,6 +917,7 @@
 	select FSL_ELBC
 	imply CMD_SATA
 	imply CMD_REGINFO
+	imply FSL_SATA
 
 config ARCH_QEMU_E500
 	bool
@@ -976,6 +984,7 @@
 	imply CMD_NAND
 	imply CMD_SATA
 	imply CMD_REGINFO
+	imply FSL_SATA
 
 config ARCH_T1042
 	bool
@@ -998,6 +1007,7 @@
 	imply CMD_NAND
 	imply CMD_SATA
 	imply CMD_REGINFO
+	imply FSL_SATA
 
 config ARCH_T2080
 	bool
@@ -1023,6 +1033,7 @@
 	imply CMD_SATA
 	imply CMD_NAND
 	imply CMD_REGINFO
+	imply FSL_SATA
 
 config ARCH_T2081
 	bool
@@ -1069,6 +1080,7 @@
 	imply CMD_SATA
 	imply CMD_NAND
 	imply CMD_REGINFO
+	imply FSL_SATA
 
 config ARCH_T4240
 	bool
@@ -1096,6 +1108,7 @@
 	imply CMD_SATA
 	imply CMD_NAND
 	imply CMD_REGINFO
+	imply FSL_SATA
 
 config BOOKE
 	bool