mmc: omap: Convert to devm_ioremap_resource

Simplify probe and cleanup code by using devm_ioremap_resource. This also
makes probe code to follow more common allocate private struct followed by
other initialization style.

Signed-off-by: Jarkko Nikula <jarkko.nikula@bitmer.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Chris Ball <chris@printf.net>

diff --cc drivers/mmc/host/omap.c
Simple merge