Add build targets for eMMC, NAND and QSPI NOR.
Signed-off-by: Ye Li
CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=board/freescale/mx6ullevk/imximage.cfg,MX6ULL_EVK_EMMC_REWORK" CONFIG_ARM=y CONFIG_ARCH_MX6=y CONFIG_TARGET_MX6ULL_14X14_EVK=y CONFIG_CMD_GPIO=y