[ARM] 3478/1: SharpSL SCOOP: Fix potenial build failure

Patch from Richard Purdie

Move platform_scoop_config from the SharpSL scoop PCMCIA driver to
the SCOOP driver. This avoids build failures when PCMCIA is not built
or is modular (scoop.c itself cannot be modular).

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>