ARM: OMAP: Make omap_device local to mach-omap2

Let's make omap_device local to mach-omap2 for
ARM common zImage support.

Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/arch/arm/mach-omap2/pm.c b/arch/arm/mach-omap2/pm.c
index ea61c329..4f749a1 100644
--- a/arch/arm/mach-omap2/pm.c
+++ b/arch/arm/mach-omap2/pm.c
@@ -21,7 +21,7 @@
 #include <asm/system_misc.h>
 
 #include <plat/omap-pm.h>
-#include <plat/omap_device.h>
+#include "omap_device.h"
 #include "common.h"
 
 #include "prcm-common.h"