[ARM] 3640/1: S3C2412: Use S3C24XX_DCLKCON instead of S3C2410_DCLKCON

Patch from Ben Dooks

The current S3C2412 support has moved to using
S3C24XX_DCLKCON unless the specific DCLKCON is
required (S3C2412_DCLKCON or S3C2410_DKCLKCON)

Move the few places using S3C2410_DCLKCON to
S3C24XX_DCLKCON

Depends on Patch #3635/1

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>