mvebu: Migrate CONFIG_DDR_32BIT/64BIT to Kconfig

Move CONFIG_DDR_32BIT/64BIT to Kconfig as a choice for Armada XP
platforms.  Make 64bit the default as this mirrors the current code.
Signed-off-by: NTom Rini <trini@konsulko.com>
Acked-by: NMarek Behún <marek.behun@nic.cz>
Reviewed-by: NStefan Roese <sr@denx.de>

arch/arm/mach-mvebu/Kconfig

@@ -184,6 +184,19 @@ config TARGET_CRS3XX_98DX3236
 
 endchoice
 
+choice
+	prompt "DDR bus width"
+	default DDR_64BIT
+	depends on ARMADA_XP
+
+config DDR_64BIT
+	bool "64bit bus width"
+
+config DDR_32BIT
+	bool "32bit bus width"
+
+endchoice
+
 config SYS_BOARD
 	default "clearfog" if TARGET_CLEARFOG
 	default "helios4" if TARGET_HELIOS4

configs/ds414_defconfig

@@ -7,6 +7,7 @@ CONFIG_SPL_LIBGENERIC_SUPPORT=y
 CONFIG_SYS_MALLOC_F_LEN=0x2000
 CONFIG_NR_DRAM_BANKS=2
 CONFIG_TARGET_DS414=y
+CONFIG_DDR_32BIT=y
 CONFIG_ENV_SIZE=0x10000
 CONFIG_ENV_OFFSET=0x7E0000
 CONFIG_ENV_SECT_SIZE=0x10000

include/configs/ds414.h

@@ -63,9 +63,6 @@
 #define CONFIG_SPL_STACK		(0x40000000 + ((192 - 16) << 10))
 #define CONFIG_SPL_BOOTROM_SAVE		(CONFIG_SPL_STACK + 4)
 
-/* DS414 bus width is 32bits */
-#define CONFIG_DDR_32BIT
-
 /* Default Environment */
 #define CONFIG_LOADADDR		0x80000
 #define CONFIG_BOOTCOMMAND					\