am33xx: Enable gpio0 clock

Signed-off-by: Tom Rini <trini@ti.com>
diff --git a/arch/arm/cpu/armv7/am33xx/clock.c b/arch/arm/cpu/armv7/am33xx/clock.c
index e3c4fd8..45b4a9f 100644
--- a/arch/arm/cpu/armv7/am33xx/clock.c
+++ b/arch/arm/cpu/armv7/am33xx/clock.c
@@ -71,6 +71,10 @@
 	writel(PRCM_MOD_EN, &cmper->l4hsclkctrl);
 	while (readl(&cmper->l4hsclkctrl) != PRCM_MOD_EN)
 		;
+
+	writel(PRCM_MOD_EN, &cmwkup->wkgpio0clkctrl);
+	while (readl(&cmwkup->wkgpio0clkctrl) != PRCM_MOD_EN)
+		;
 }
 
 /*