ramips: mt7620: fix double use of pins

The pins are used as (LED) GPIOs and can't be used at the same time as
hardware controlled ephy (LED) pins.

Fixes: FS#1500

Signed-off-by: Mathias Kresin <dev@kresin.me>

target/linux/ramips/dts/AI-BR100.dts

@@ -98,8 +98,6 @@
 };
 
 &ethernet {
-	pinctrl-names = "default";
-	pinctrl-0 = <&ephy_pins>;
 	mtd-mac-address = <&factory 0x4>;
 	mediatek,portmap = "llllw";
 };

target/linux/ramips/dts/GL-MT300A.dts

@@ -131,8 +131,6 @@
 };
 
 &ethernet {
-	pinctrl-names = "default";
-	pinctrl-0 = <&ephy_pins>;
 	mtd-mac-address = <&factory 0x4000>;
 	mediatek,portmap = "wllll";
 };

target/linux/ramips/dts/GL-MT750.dts

@@ -126,8 +126,6 @@
 };
 
 &ethernet {
-	pinctrl-names = "default";
-	pinctrl-0 = <&ephy_pins>;
 	mtd-mac-address = <&factory 0x4000>;
 	mediatek,portmap = "llllw";
 };