omap3: make local functions static

Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
diff --git a/arch/arm/cpu/armv7/omap3/board.c b/arch/arm/cpu/armv7/omap3/board.c
index 667e77f..08f8363 100644
--- a/arch/arm/cpu/armv7/omap3/board.c
+++ b/arch/arm/cpu/armv7/omap3/board.c
@@ -266,7 +266,7 @@
  * Routine: wait_for_command_complete
  * Description: Wait for posting to finish on watchdog
  *****************************************************************************/
-void wait_for_command_complete(struct watchdog *wd_base)
+static void wait_for_command_complete(struct watchdog *wd_base)
 {
 	int pending = 1;
 	do {