ARM: OMAP: Make plat/omap_hwmod.h local to mach-omap2

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

Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/arch/arm/mach-omap2/omap_device.c b/arch/arm/mach-omap2/omap_device.c
index e5fbcb5..2e6d337 100644
--- a/arch/arm/mach-omap2/omap_device.c
+++ b/arch/arm/mach-omap2/omap_device.c
@@ -90,7 +90,7 @@
 #include <linux/notifier.h>
 
 #include "omap_device.h"
-#include <plat/omap_hwmod.h>
+#include "omap_hwmod.h"
 #include <plat/clock.h>
 
 /* These parameters are passed to _omap_device_{de,}activate() */