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/configs/MPC8315ERDB_defconfig b/configs/MPC8315ERDB_defconfig
index fc846b2..473b9a6 100644
--- a/configs/MPC8315ERDB_defconfig
+++ b/configs/MPC8315ERDB_defconfig
@@ -19,6 +19,7 @@
 CONFIG_CMD_MTDPARTS=y
 CONFIG_MTDIDS_DEFAULT="nand0=e0600000.flash"
 CONFIG_MTDPARTS_DEFAULT="mtdparts=e0600000.flash:512k(uboot),128k(env),6m@1m(kernel),-(fs)"
+CONFIG_FSL_SATA=y
 # CONFIG_MMC is not set
 CONFIG_MTD_NOR_FLASH=y
 CONFIG_PHYLIB=y
diff --git a/configs/MPC837XERDB_defconfig b/configs/MPC837XERDB_defconfig
index 14b7a5a..bc54b3a 100644
--- a/configs/MPC837XERDB_defconfig
+++ b/configs/MPC837XERDB_defconfig
@@ -17,6 +17,7 @@
 CONFIG_CMD_DATE=y
 CONFIG_CMD_EXT2=y
 CONFIG_CMD_FAT=y
+CONFIG_FSL_SATA=y
 CONFIG_MTD_NOR_FLASH=y
 CONFIG_PHYLIB=y
 CONFIG_SYS_NS16550=y
diff --git a/configs/controlcenterd_36BIT_SDCARD_DEVELOP_defconfig b/configs/controlcenterd_36BIT_SDCARD_DEVELOP_defconfig
index 48e9f6e..67fa8e4 100644
--- a/configs/controlcenterd_36BIT_SDCARD_DEVELOP_defconfig
+++ b/configs/controlcenterd_36BIT_SDCARD_DEVELOP_defconfig
@@ -32,6 +32,7 @@
 CONFIG_CMD_FAT=y
 CONFIG_ENV_IS_IN_MMC=y
 CONFIG_DM=y
+CONFIG_FSL_SATA=y
 CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_STMICRO=y
 CONFIG_PHYLIB=y
diff --git a/configs/controlcenterd_36BIT_SDCARD_defconfig b/configs/controlcenterd_36BIT_SDCARD_defconfig
index 58729b6..19a4daa 100644
--- a/configs/controlcenterd_36BIT_SDCARD_defconfig
+++ b/configs/controlcenterd_36BIT_SDCARD_defconfig
@@ -32,6 +32,7 @@
 CONFIG_CMD_FAT=y
 CONFIG_ENV_IS_IN_MMC=y
 CONFIG_DM=y
+CONFIG_FSL_SATA=y
 CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_STMICRO=y
 CONFIG_PHYLIB=y