ipq806x: add patch to fix broken usb3

Due to changes in syscon driver, the phy dwc3 driver
needs to use device_node_to_regmap since it has to skip
the new introduced clk check. This fix broken usb3 on this
target.

Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>

target/linux/ipq806x/patches-5.4/0077-phy-dwc3-qcom-fix-kernel-5_4.patch

@@ -0,0 +1,29 @@
+--- a/drivers/phy/qualcomm/phy-qcom-dwc3.c
++++ b/drivers/phy/qualcomm/phy-qcom-dwc3.c
+@@ -491,7 +491,6 @@ static int qcom_dwc3_phy_probe(struct pl
+ 	struct qcom_dwc3_usb_phy	*phy_dwc3;
+ 	struct phy_provider		*phy_provider;
+ 	struct phy			*generic_phy;
+-	struct resource			*res;
+ 	const struct of_device_id *match;
+ 	const struct qcom_dwc3_phy_drvdata *data;
+ 	struct device_node *np;
+@@ -505,7 +504,17 @@ static int qcom_dwc3_phy_probe(struct pl
+ 
+ 	phy_dwc3->dev = &pdev->dev;
+ 
+-	phy_dwc3->base = syscon_regmap_lookup_by_phandle(pdev->dev.of_node, "regmap");
++	np = of_parse_phandle(pdev->dev.of_node, "regmap", 0);
++	if (!np)
++		return -ENODEV;
++
++	if (!of_device_is_compatible(np, "syscon"))
++		return -EINVAL;
++
++	phy_dwc3->base = device_node_to_regmap(np);
++
++	of_node_put(np);
++
+ 	if (IS_ERR_OR_NULL(phy_dwc3->base))
+ 		return PTR_ERR_OR_ZERO(phy_dwc3->base) ? : -EINVAL;
+