ARM: dts: rockchip: Drop ethernet-phy-ieee802.3-c22 from PHY compatible string on edgeble-neu2

The rtl82xx DT bindings do not require ethernet-phy-ieee802.3-c22
as the fallback compatible string. There are fewer users of the
Realtek PHY compatible string with fallback compatible string than
there are users without fallback compatible string, so drop the
fallback compatible string from the few remaining users:

$ git grep -ho ethernet-phy-id001c....... | sort | uniq -c
      1 ethernet-phy-id001c.c816",
      2 ethernet-phy-id001c.c915",
      2 ethernet-phy-id001c.c915";
      5 ethernet-phy-id001c.c916",
     13 ethernet-phy-id001c.c916";

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202406290316.YvZdvLxu-lkp@intel.com/
Signed-off-by: Marek Vasut <marex@denx.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20240630034910.173552-1-marex@denx.de
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

Author: Marek Vasut

arch/arm/boot/dts/rockchip/rv1126-edgeble-neu2-io.dts

@@ -69,8 +69,7 @@
 
 &mdio {
 	phy: ethernet-phy@0 {
-		compatible = "ethernet-phy-id001c.c916",
-			     "ethernet-phy-ieee802.3-c22";
+		compatible = "ethernet-phy-id001c.c916";
 		reg = <0x0>;
 		pinctrl-names = "default";
 		pinctrl-0 = <&eth_phy_rst>;