NFM cpu: Import sunxi MMC driver from uboot

Change-Id: I8417875737a5f8e1dc21325ad5d6d245423f68cb
NFM cpu: Add clock reg definitions for SD clock

Change-Id: I88763072c8a541ddba794e79fb55e82eb2f187a9
cubieboard: add basic SD init and testing

Change-Id: I63302b87b583ed62794559238b8b1ae19aba3f81
NFM cpu: use SD card for bootblock media

Change-Id: Ie0b123023c53e485c41650c1fc7b0fb69a286a30
CPU: bootblock_media, cache entire rom to RAM

Change-Id: I6ec78ae2b173d054a80584315bd2698c618f5b89
CPU: Add first ramstage bits

Change-Id: I857755976b17b0e492c086162f395a77933eeed8
KILLME fucking hack

Change-Id: I4a20a0d85621cbd4adc73401f064bc610ae5cb53