arm64: dts: ti: k3-am65-main: Use lower case hexadecimal

Device tree convention uses lower case a-f for hexadecimals. Fix the
same.
Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
Acked-by: Suman Anna <s-anna@ti.com>
Link: https://lore.kernel.org/r/20200903130015.21361-3-nm@ti.com

arch/arm64/boot/dts/ti/k3-am65-main.dtsi

@@ -344,9 +344,9 @@ serdes_mux: mux-controller {
 					<0x4090 0x3>; /* SERDES1 lane select */
 		};
 
-		dss_oldi_io_ctrl: dss_oldi_io_ctrl@41E0 {
+		dss_oldi_io_ctrl: dss_oldi_io_ctrl@41e0 {
 			compatible = "syscon";
-			reg = <0x0000041E0 0x14>;
+			reg = <0x0000041e0 0x14>;
 		};
 
 		ehrpwm_tbclk: syscon@4140 {