ARM: dts: OMAP5: Update keypad reg property

Add missing OMAP keypad reg property information.

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Benoit Cousson <benoit.cousson@linaro.org>
diff --git a/arch/arm/boot/dts/omap5.dtsi b/arch/arm/boot/dts/omap5.dtsi
index ff09720..e539258 100644
--- a/arch/arm/boot/dts/omap5.dtsi
+++ b/arch/arm/boot/dts/omap5.dtsi
@@ -427,6 +427,7 @@
 
 		keypad: keypad@4ae1c000 {
 			compatible = "ti,omap4-keypad";
+			reg = <0x4ae1c000 0x400>;
 			ti,hwmods = "kbd";
 		};