[MMC] Clean up wbsd detection handling

The wbsd driver's card detection routing is a bit of a mess. This
patch cleans up the routine and makes it a bit more comprihensible.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
1 file changed