[ARM] 3641/1: S3C2412: Fixup gpio register naming

Patch from Ben Dooks

The current S3C2412 has used to moving S3C24XX_
for the generic form of an register has been
moved from the S3C2410.

Fixup S3C2410_EXTINTx and S3C2410_EINFLTx to
S3C24XX_EXTINTx and S3C24XX_EXTINTx

Depends on Patch #3635/1, Patch #3640/1

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