sunxi: Match sun4i, sun6i, sun9i CCI definitions for NAND and DMA

Make sure definitions for NAND clock and DMA gate bits are the same
across boards.

Signed-off-by: Roy Spliet <r.spliet@ultimaker.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>