arm64: dts: mt7988: try to fix the empty reg/ranges error

arch/arm64/boot/dts/mediatek/mt7988a.dtsi:715.26-737.5: Warning (unit_address_vs_reg):
/soc/xs-phy@11e10000: node has a unit name, but no reg or ranges property
arch/arm64/boot/dts/mediatek/mt7988a.dtsi:685.24-706.5: Warning (simple_bus_reg):
/soc/t-phy@11c50000: missing or empty reg/ranges property
arch/arm64/boot/dts/mediatek/mt7988a.dtsi:715.26-737.5: Warning (simple_bus_reg):
/soc/xs-phy@11e10000: missing or empty reg/ranges property

Author: frank-w

arch/arm64/boot/dts/mediatek/mt7988a.dtsi

@@ -685,6 +685,7 @@
 		tphy: t-phy@11c50000 {
 			compatible = "mediatek,mt7986-tphy",
 				     "mediatek,generic-tphy-v2";
+			reg = <0 0x11c50000 0 0x1000>;
 			#address-cells = <2>;
 			#size-cells = <2>;
 			ranges;
@@ -715,6 +716,7 @@
 		xsphy: xs-phy@11e10000 {
 			compatible = "mediatek,mt7988-xsphy",
 				     "mediatek,xsphy";
+			reg = <0 0x11e10000 0 0x1000>;
 			#address-cells = <2>;
 			#size-cells = <2>;
 			ranges;