ARM: dts: Split memory into 4 sections for exynos4210-trats

Since the maximum section size on mach-exynos is set to 256MiB, boards
with memory configuration defined using sections bigger than 256MiB will
fail to boot with a kernel panic.

This patch modifies the dts file of Samsung Trats board to define four
sections of 256MiB instead of two of 512MiB to fix the boot problem.
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

arch/arm/boot/dts/exynos4210-trats.dts

@@ -20,8 +20,10 @@ / {
 	compatible = "samsung,trats", "samsung,exynos4210";
 
 	memory {
-		reg =  <0x40000000 0x20000000
-			0x60000000 0x20000000>;
+		reg =  <0x40000000 0x10000000
+			0x50000000 0x10000000
+			0x60000000 0x10000000
+			0x70000000 0x10000000>;
 	};
 
 	chosen {