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/timer.c b/arch/arm/mach-omap2/timer.c
index a2ea2f3..b11df823 100644
--- a/arch/arm/mach-omap2/timer.c
+++ b/arch/arm/mach-omap2/timer.c
@@ -43,7 +43,7 @@
 #include <asm/sched_clock.h>
 
 #include <asm/arch_timer.h>
-#include <plat/omap_hwmod.h>
+#include "omap_hwmod.h"
 #include "omap_device.h"
 #include <plat/dmtimer.h>
 #include <plat/omap-pm.h>