ARM: dts: imx35-pdk: Fix memory region description

On imx35pdk there are two DRAM chip selects that are used:

CS0 at 0x80000000
CS1 at 0x90000000

Each bank is connected to 128MB of DRAM, giving a total of 256MB of system DRAM.

Fix the memory layout to describe the hardware appropriately.
Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: NShawn Guo <shawn.guo@freescale.com>

arch/arm/boot/dts/imx35-pdk.dts

@@ -18,7 +18,8 @@
 	compatible = "fsl,imx35-pdk", "fsl,imx35";
 
 	memory {
-		reg = <0x80000000 0x8000000>;
+		reg = <0x80000000 0x8000000>,
+		      <0x90000000 0x8000000>;
 	};
 };