[ARM] S3C24XX: Move files out of include/asm-arm/plat-s3c*

First move of items out of include/asm-arm/plat-s3c* to their
new homes under arch/arm/plat-s3c/include/plat and
arch/arm/plat-s3c24xx/include/plat directories.

Note, we have to create a dummy arch/arm/plat-s3c/Makefile to
allow us to add arch/arm/plat-s3c/include/plat to the path.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>

arch/arm/plat-s3c24xx/pm.c

@@ -40,7 +40,7 @@
 #include <mach/hardware.h>
 #include <asm/io.h>
 
-#include <asm/plat-s3c/regs-serial.h>
+#include <plat/regs-serial.h>
 #include <mach/regs-clock.h>
 #include <mach/regs-gpio.h>
 #include <mach/regs-mem.h>
@@ -48,7 +48,7 @@
 
 #include <asm/mach/time.h>
 
-#include <asm/plat-s3c24xx/pm.h>
+#include <plat/pm.h>
 
 /* for external use */