msm: copper: Add msm-gpio as an int-ctrl in Device Tree

All irq chip drivers must register with Device Tree. This allows
for translation of included interrupts, and irq_domain allocation
of the msm-gpio range on the system.

Change-Id: Ic587a810e28eac4b1216e885a22139681fe1c158
Signed-off-by: Michael Bohan <mbohan@codeaurora.org>
diff --git a/arch/arm/boot/dts/msmcopper.dts b/arch/arm/boot/dts/msmcopper.dts
index fea1c52..57ad77a 100644
--- a/arch/arm/boot/dts/msmcopper.dts
+++ b/arch/arm/boot/dts/msmcopper.dts
@@ -15,6 +15,13 @@
 		      <0xF9002000 0x1000>;
 	};
 
+	msmgpio: gpio@fd400000 {
+		compatible = "qcom,msm-gpio";
+		interrupt-controller;
+		#interrupt-cells = <2>;
+		reg = <0xfd400000 0x4000>;
+	};
+
 	timer {
 		compatible = "qcom,msm-qtimer";
 		interrupts = <1 2 0>;