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/io.c b/arch/arm/mach-omap2/io.c
index 25d20ce..33f090c 100644
--- a/arch/arm/mach-omap2/io.c
+++ b/arch/arm/mach-omap2/io.c
@@ -35,7 +35,7 @@
 #include "clock3xxx.h"
 #include "clock44xx.h"
 
-#include <plat/common.h>
+#include "common.h"
 #include <plat/omap-pm.h>
 #include "voltage.h"
 #include "powerdomain.h"
@@ -43,7 +43,7 @@
 #include "clockdomain.h"
 #include <plat/omap_hwmod.h>
 #include <plat/multi.h>
-#include <plat/common.h>
+#include "common.h"
 
 /*
  * The machine specific code may provide the extra mapping besides the