This patch adds support for the MMC subdevice 'cell' commonly found in
TMIO based MFDs.
Signed-off-by: NIan Molton <spyro@f2s.com>
Acked-by: NPierre Ossman <drzeus@drzeus.cx>
Signed-off-by: NSamuel Ortiz <sameo@openedhand.com>