realview: enable sd card support

qemu can be run with -sd <imagename>

Signed-off-by: Dirk Neukirchen <dirkneukirchen@web.de>

SVN-Revision: 46923

target/linux/realview/config-3.18

@@ -78,6 +78,7 @@ CONFIG_DEBUG_LL_INCLUDE="mach/debug-macro.S"
 CONFIG_DEBUG_USER=y
 CONFIG_DMA_CACHE_RWFO=y
 CONFIG_DNOTIFY=y
+CONFIG_EXT4_FS=y
 CONFIG_FB=y
 CONFIG_FB_ARMCLCD=y
 CONFIG_FB_CFB_COPYAREA=y
@@ -184,6 +185,9 @@ CONFIG_MACH_REALVIEW_PBX=y
 CONFIG_MAGIC_SYSRQ=y
 CONFIG_MDIO_BOARDINFO=y
 CONFIG_MIGHT_HAVE_CACHE_L2X0=y
+CONFIG_MMC=y
+CONFIG_MMC_ARMMMCI=y
+CONFIG_MMC_BLOCK=y
 CONFIG_MODULES_USE_ELF_REL=y
 CONFIG_MTD_CMDLINE_PARTS=y
 CONFIG_MULTI_IRQ_HANDLER=y