Convert CONFIG_SPL_SATA_SUPPORT to Kconfig

Move this option to Kconfig and tidy up existing uses.
Signed-off-by: NSimon Glass <sjg@chromium.org>

configs/cm_t54_defconfig

@@ -5,6 +5,7 @@ CONFIG_OF_BOARD_SETUP=y
 CONFIG_BOOTDELAY=3
 CONFIG_VERSION_VARIABLE=y
 CONFIG_SPL=y
+CONFIG_SPL_SATA_SUPPORT=y
 CONFIG_HUSH_PARSER=y
 CONFIG_SYS_PROMPT="CM-T54 # "
 CONFIG_CMD_BOOTZ=y

include/configs/cm_t54.h

@@ -56,7 +56,6 @@
 #define CONFIG_SUPPORT_EMMC_BOOT
 
 /* SATA Boot related defines */
-#define CONFIG_SPL_SATA_SUPPORT
 #define CONFIG_SPL_SATA_BOOT_DEVICE		0
 #define CONFIG_SYS_SATA_FAT_BOOT_PARTITION	1