ARM: at91: ma5d4: Enable support for booting from eMMC

The SoM has been redesigned to work around bug in the SoC and is now
capable of booting from the eMMC. Add support for booting from eMMC.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Andreas Bießmann <andreas.devel@googlemail.com>

include/configs/ma5d4evk.h

@@ -210,4 +210,13 @@
 #define CONFIG_SPL_SPI_LOAD
 #define CONFIG_SYS_SPI_U_BOOT_OFFS	0x10000
 
+#define CONFIG_SYS_USE_MMC
+#define CONFIG_SPL_LDSCRIPT		arch/arm/mach-at91/armv7/u-boot-spl.lds
+#define CONFIG_SPL_MMC_SUPPORT
+#define CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR 0x200
+#define CONFIG_SYS_MMCSD_FS_BOOT_PARTITION	1
+#define CONFIG_SPL_FS_LOAD_PAYLOAD_NAME		"u-boot.img"
+#define CONFIG_SPL_FAT_SUPPORT
+#define CONFIG_SPL_LIBDISK_SUPPORT
+
 #endif	/* __MA5D4EVK_CONFIG_H__ */