arm64: dts: meson-gxl: fix internal phy compatible

This fixes the following DT schemas check errors:
meson-gxl-s805x-libretech-ac.dt.yaml: ethernet-phy@8: compatible: ['ethernet-phy-id0181.4400', 'ethernet-phy-ieee802.3-c22'] is not valid under any of the given schemas
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

arch/arm64/boot/dts/amlogic/meson-gxl.dtsi

@@ -709,7 +709,7 @@ internal_mdio: mdio@e40908ff {
 			#size-cells = <0>;
 
 			internal_phy: ethernet-phy@8 {
-				compatible = "ethernet-phy-id0181.4400", "ethernet-phy-ieee802.3-c22";
+				compatible = "ethernet-phy-id0181.4400";
 				interrupts = <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>;
 				reg = <8>;
 				max-speed = <100>;