ARM: dts: add sram for imx53 and imx6q

This patch enables the On-Chip SRAM (OCRAM) on i.MX53 and i.MX6 SoCs.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
diff --git a/arch/arm/boot/dts/imx53.dtsi b/arch/arm/boot/dts/imx53.dtsi
index d437bfb..cec6cdd 100644
--- a/arch/arm/boot/dts/imx53.dtsi
+++ b/arch/arm/boot/dts/imx53.dtsi
@@ -1087,5 +1087,10 @@
 				status = "disabled";
 			};
 		};
+
+		ocram: sram@f8000000 {
+			compatible = "mmio-sram";
+			reg = <0xf8000000 0x20000>;
+		};
 	};
 };