Add some missing properties to the SRAM node to make the dt
validation happy.

Signed-off-by: Daniel Palmer <daniel@0x0f.com>
---
 arch/arm/boot/dts/sigmastar/mstar-v7.dtsi | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm/boot/dts/sigmastar/mstar-v7.dtsi b/arch/arm/boot/dts/sigmastar/mstar-v7.dtsi
index db661e189eec..e50e4000d1ee 100644
--- a/arch/arm/boot/dts/sigmastar/mstar-v7.dtsi
+++ b/arch/arm/boot/dts/sigmastar/mstar-v7.dtsi
@@ -187,6 +187,9 @@ pm_uart: serial@221000 {
 		imi: sram@a0000000 {
 			compatible = "mmio-sram";
 			reg = <0xa0000000 0x10000>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges = <0 0xa0000000 0x10000>;
 		};
 	};
 };
-- 
2.51.0