[PATCH] ARM: OMAP: omap_cf works better

Adding a "struct resource" prevented oopsing because of recent changes in
PCMCIA core requirements.

Restore a changes that lost in some kernel.org merge:  don't forget to
unregister the PCMCIA socket when unbinding the driver.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>