ARM: tegra: Add prototypes for subsystem suspend functions

Signed-off-by: Colin Cross <ccross@android.com>
diff --git a/arch/arm/mach-tegra/timer.c b/arch/arm/mach-tegra/timer.c
index 7b8ad1f..36b53a7 100644
--- a/arch/arm/mach-tegra/timer.c
+++ b/arch/arm/mach-tegra/timer.c
@@ -33,6 +33,7 @@
 
 #include <mach/iomap.h>
 #include <mach/irqs.h>
+#include <mach/suspend.h>
 
 #include "board.h"
 #include "clock.h"