ramips: fix mt7620a ND/SD pins pinmuxes

Drop the nd_sd gpio pinmux in case sdcard is used. They're mutually
exclusive and for most of the boards not even used as GPIOs.

If the pins are in sdcard mode, the pins ND_WE_N and ND_CS_N are still
GPIOs (#45 and #46).

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

target/linux/ramips/dts/D240.dts

@@ -173,7 +173,7 @@
 &pinctrl {
 	state_default: pinctrl0 {
 		default {
-			ralink,group = "i2c", "uartf", "wled", "spi refclk", "pa", "nd_sd";
+			ralink,group = "i2c", "uartf", "wled", "spi refclk", "pa";
 			ralink,function = "gpio";
 		};
 	};

target/linux/ramips/dts/HC5X61.dtsi

@@ -135,7 +135,7 @@
 &pinctrl {
 	state_default: pinctrl0 {
 		gpio {
-			ralink,group = "uartf", "wled", "nd_sd";
+			ralink,group = "uartf", "wled";
 			ralink,function = "gpio";
 		};
 	};

target/linux/ramips/dts/OY-0001.dts

@@ -93,7 +93,7 @@
 &pinctrl {
 	state_default: pinctrl0 {
 		gpio {
-			ralink,group = "i2c", "uartf", "rgmii1", "rgmii2", "wled", "nd_sd";
+			ralink,group = "i2c", "uartf", "rgmii1", "rgmii2", "wled";
 			ralink,function = "gpio";
 		};
 	};

target/linux/ramips/dts/ZTE-Q7.dts

@@ -89,7 +89,7 @@
 &pinctrl {
 	state_default: pinctrl0 {
 		gpio {
-			ralink,group = "i2c", "uartf", "rgmii1", "rgmii2", "ephy", "wled", "nd_sd";
+			ralink,group = "i2c", "uartf", "rgmii1", "rgmii2", "ephy", "wled";
 			ralink,function = "gpio";
 		};
 	};