The header file can be local in mach-s3c64xx/.
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

Move the register and GPIO definition files from plat-s3c64xx into the
machine include direcotry as they are unlikely to be reused outside
mach-s3c64xx.

This move includes removing the empty <mach/regs-clock.h> and replacing
it with the <plat/regs-clock.h> implementation.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Add the register defines for the sleep and power control
functions in the S3C64XX SYSCON register block.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>