Make the driver depend on either ARCH_S3C2410 (as legacy) or the new
device selection of SAMSUNG_DEV_TS.

Change the menuconfig name to reflect this driver is now handling more
devices that just the s3c2410.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Acked-by: Dmitry Torokhov <dtor@mail.ru>