ARM: shmobile: kzm9g: disable MMCIF Command Completion Signal
MMCIF on sh73a0 doesn't support Command Completion Signal, a platform
parameter has to be added to disable it on kzm9g.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>