ARM: dts: am4372: Update emif node

Now that we will use ti-emif-sram driver for am4372 PM, update the
emif DT node with the required sram property.
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/am4372.dtsi

@@ -237,6 +237,8 @@ emif: emif@4c000000 {
 			compatible = "ti,emif-am4372";
 			reg = <0x4c000000 0x1000000>;
 			ti,hwmods = "emif";
+			sram = <&pm_sram_code
+				&pm_sram_data>;
 		};
 
 		edma: edma@49000000 {