ramips: mtk-mmc: remove nt76x8 pinctrl hack

Now we can set the mt76x8 SDXC pinmux in device tree.

Signed-off-by: Shiji Yang <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/17446
Signed-off-by: Hauke Mehrtens <[email protected]>
(cherry picked from commit b4a9f85c1394f13806fc2f51f5f6f23494773d7e)

target/linux/ramips/files/drivers/mmc/host/mtk-mmc/sd.c

@@ -2210,12 +2210,6 @@ static int msdc_drv_probe(struct platform_device *pdev)
 	struct msdc_hw *hw;
 	int ret;
 
-	//FIXME: this should be done by pinconf and not by the sd driver
-	if ((ralink_soc == MT762X_SOC_MT7688 ||
-	     ralink_soc == MT762X_SOC_MT7628AN) &&
-	    (!(rt_sysc_r32(0x60) & BIT(15))))
-		rt_sysc_m32(0xf << 17, 0xf << 17, 0x3c);
-
 	hw = &msdc0_hw;
 
 	if (of_property_read_bool(pdev->dev.of_node, "mtk,wp-en"))