ARM: OMAP4: hwspinlocks_init() should be static

Sparse found out that hwspinlocks_init() wasn't marked static,
and it should've been.

Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>

arch/arm/mach-omap2/hwspinlock.c

@@ -28,7 +28,7 @@ static struct hwspinlock_pdata omap_hwspinlock_pdata __initdata = {
 	.base_id = 0,
 };
 
-int __init hwspinlocks_init(void)
+static int __init hwspinlocks_init(void)
 {
 	int retval = 0;
 	struct omap_hwmod *oh;