1.modify mshci[mmc4] pin config error
2.add mmu config, like va->pa
3.modify emmc control error,like:emmc def:1 bus width. not send cmd12 for stop trs.
4.s5p_mshci add cpu config. like: clocks ctrl
5.cmd fdisk must add mmc_init when useing
	modified:   arch/arm/cpu/armv7/exynos/pinmux.c
	modified:   arch/arm/include/asm/io.h
	modified:   board/samsung/exynos4412/exynos4412.c
	modified:   board/samsung/exynos4412/lowlevel_init.S
	modified:   common/cmd_mmc_fdisk.c
	modified:   drivers/mmc/mmc.c
	modified:   drivers/mmc/mmc_write.c
	modified:   drivers/mmc/s5p_mshci.c
	modified:   include/s5p_mshc.h