ARM: 7159/1: OMAP: Introduce local common.h files

As suggested by Russell King - ARM Linux <linux@arm.linux.org.uk>,
there's no need to keep local prototypes in non-local headers.

Add mach-omap1/common.h and mach-omap2/common.h and move the
local prototypes there from plat/common.h and mach/omap4-common.h.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-omap2/pm44xx.c b/arch/arm/mach-omap2/pm44xx.c
index 59a870b..8edb015 100644
--- a/arch/arm/mach-omap2/pm44xx.c
+++ b/arch/arm/mach-omap2/pm44xx.c
@@ -16,8 +16,8 @@
 #include <linux/err.h>
 #include <linux/slab.h>
 
+#include "common.h"
 #include "powerdomain.h"
-#include <mach/omap4-common.h>
 
 struct power_state {
 	struct powerdomain *pwrdm;