[ARM] S3C24XX: Compilation fix if s3c2410 is not selected

This patch fixes compilation error if no s3c2410 processor is selected
but the s3c244x is selected. The function s3c2410_baseclk_add() is now
available for all Samsung cpus.

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
[ben-linux@fluff.org: Whitespace and description fixups]
Signed-off-by: Ben Dooks <ben-linux@fluff.org>