qualcommax: fix mmc pinctrl for GL-AXT1800

After switching to kernel 6.18, a pinctrl conflict occurred for
the sd_card: pin GPIO_62 already requested by 7804000.mmc
ipq6018-pinctrl 1000000.pinctrl: error -EINVAL: pin-62

Switch the function of the CD pin to "gpio" to fix this.

Signed-off-by: Chukun Pan <amadeus@jmu.edu.cn>

target/linux/qualcommax/dts/ipq6000-gl-axt1800.dts

@@ -96,7 +96,7 @@
 	sd_pins: sd-pins {
 		sd {
 			pins = "gpio62";
-			function = "sd_card";
+			function = "gpio";
 			bias-pull-up;
 		};
 		ldo {