arm64: dts: ti: k3-am65: Add full compatible to dss-oldi-io-ctrl node

This matches the binding for this register region which fixes a couple
DTS check warnings.

While here trim the leading 0s from the "reg" definition.
Signed-off-by: Andrew Davis <afd@ti.com>
Reviewed-by: Aradhya Bhatia <a-bhatia1@ti.com>
Link: https://lore.kernel.org/r/20231117141433.9461-1-afd@ti.comSigned-off-by: Nishanth Menon <nm@ti.com>

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

@@ -498,8 +498,8 @@ serdes_mux: mux-controller {
 		};
 
 		dss_oldi_io_ctrl: dss-oldi-io-ctrl@41e0 {
-			compatible = "syscon";
-			reg = <0x000041e0 0x14>;
+			compatible = "ti,am654-dss-oldi-io-ctrl", "syscon";
+			reg = <0x41e0 0x14>;
 		};
 
 		ehrpwm_tbclk: clock-controller@4140 {