ARM: tegra: fix memory size on Beaver

Tegra30's boot ROM masks the top 1MiB of RAM. Fix the memory node in
Beaver's DT file to reflect this.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
diff --git a/arch/arm/boot/dts/tegra30-beaver.dts b/arch/arm/boot/dts/tegra30-beaver.dts
index b732f7c..7a63cde 100644
--- a/arch/arm/boot/dts/tegra30-beaver.dts
+++ b/arch/arm/boot/dts/tegra30-beaver.dts
@@ -7,7 +7,7 @@
 	compatible = "nvidia,beaver", "nvidia,tegra30";
 
 	memory {
-		reg = <0x80000000 0x80000000>;
+		reg = <0x80000000 0x7ff00000>;
 	};
 
 	pinmux {