arm64: dts: renesas: v3hsk: Add clock-skew for GEther's Micrel PHY

Add the missing clock-skew property for the GEther's Micrel KSZ9031 PHY.
Signed-off-by: Nam Nguyen <nam.nguyen.yh@renesas.com>
Signed-off-by: Phong Hoang <phong.hoang.wz@renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/39ab4e92d2242e1d7e83db92f91fc6e0e7e76c47.1675334998.git.geert+renesas@glider.be

arch/arm64/boot/dts/renesas/r8a77980-v3hsk.dts

@@ -122,6 +122,7 @@ &gether {
 	phy0: ethernet-phy@0 {
 		compatible = "ethernet-phy-id0022.1622",
 			     "ethernet-phy-ieee802.3-c22";
+		rxc-skew-ps = <1500>;
 		reg = <0>;
 		interrupt-parent = <&gpio4>;
 		interrupts = <23 IRQ_TYPE_LEVEL_LOW>;