arm64: dts: renesas: ulcb: drop "avb_phy_int" from avb_pins

Since the Ethernet AVB driver doesn't support AVB_PHY_INT handling
and it will be handled by a phy driver as a gpio pin, this patch
removes the "avb_phy_int" from the avb_pins node.
Reported-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Fixes: 133ace3f ("arm64: dts: ulcb: Set drive-strength for ravb pins")
Signed-off-by: NYoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Acked-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

arch/arm64/boot/dts/renesas/ulcb.dtsi

@@ -254,8 +254,7 @@
 
 	avb_pins: avb {
 		mux {
-			groups = "avb_link", "avb_phy_int", "avb_mdc",
-				 "avb_mii";
+			groups = "avb_link", "avb_mdc", "avb_mii";
 			function = "avb";
 		};