Add architecture timer in DTB for gem5

This change in conjunction with changeset 2258 in gem5 (patch queue)
makes the architecture timer work.

Signed-off-by: Rene de Jong <rene.dejong@arm.com>
Signed-off-by: Chris Emmons <chris.emmons@arm.com>

arch/arm/boot/dts/vexpress-v2p-ca15-tc1-gem5.dts

diff --git a/arch/arm/boot/dts/vexpress-v2p-ca15-tc1-gem5.dts b/arch/arm/boot/dts/vexpress-v2p-ca15-tc1-gem5.dts
index 078079e..ae0d683 100644
--- a/arch/arm/boot/dts/vexpress-v2p-ca15-tc1-gem5.dts
+++ b/arch/arm/boot/dts/vexpress-v2p-ca15-tc1-gem5.dts
@@ -127,14 +127,25 @@
 	};
 */
 
+
+	timer {
+		compatible = "arm,cortex-a15-timer",
+			     "arm,armv7-timer";
+		interrupts = <1 13 0xff01>,
+		             <1 14 0xff01>;
+        clocks = <&oscclk7>;
+        clock-names="apb_pclk";
+	};
+
+
 	/** HACK : cortex-a9-twd-timer hack -- temporary fix */
-	timer@2c080000 {
+	/*timer@2c080000 {
 		compatible = "arm,cortex-a9-twd-timer";
 		reg = <0 0x2c080000 0 0x20>;
 		interrupts = <1 13 0xf04>;
 		clocks = <&oscclk7>;
 		clock-names = "apb_pclk";
-	};
+	};*/
 
 	pmu {
 		compatible = "arm,cortex-a15-pmu";