ARM: S3C64XX: Move headers into machine include directory

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: Ben Dooks <ben-linux@fluff.org>
diff --git a/arch/arm/mach-s3c64xx/mach-smdk6410.c b/arch/arm/mach-s3c64xx/mach-smdk6410.c
index 6e6ff35..021670e 100644
--- a/arch/arm/mach-s3c64xx/mach-smdk6410.c
+++ b/arch/arm/mach-s3c64xx/mach-smdk6410.c
@@ -46,10 +46,10 @@
 #include <asm/mach-types.h>
 
 #include <plat/regs-serial.h>
-#include <plat/regs-modem.h>
-#include <plat/regs-gpio.h>
-#include <plat/regs-sys.h>
-#include <plat/regs-srom.h>
+#include <mach/regs-modem.h>
+#include <mach/regs-gpio.h>
+#include <mach/regs-sys.h>
+#include <mach/regs-srom.h>
 #include <plat/iic.h>
 #include <plat/fb.h>
 #include <plat/gpio-cfg.h>