ARM: dts: imx6dl: add missing properties for sram

[ Upstream commit f5848b95633d598bacf0500e0108dc5961af88c0 ]

All 3 properties are required by sram.yaml. Fixes the dtbs_check warning:
sram@900000: '#address-cells' is a required property
sram@900000: '#size-cells' is a required property
sram@900000: 'ranges' is a required property

Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
diff --git a/arch/arm/boot/dts/imx6dl.dtsi b/arch/arm/boot/dts/imx6dl.dtsi
index 7aa120f..82a7d5b 100644
--- a/arch/arm/boot/dts/imx6dl.dtsi
+++ b/arch/arm/boot/dts/imx6dl.dtsi
@@ -63,6 +63,9 @@
 		ocram: sram@00900000 {
 			compatible = "mmio-sram";
 			reg = <0x00900000 0x20000>;
+			ranges = <0 0x00900000 0x20000>;
+			#address-cells = <1>;
+			#size-cells = <1>;
 			clocks = <&clks IMX6QDL_CLK_OCRAM>;
 		};