switch to mainline kernel + add corresponding config + patchfiles (for v5.9)

kernel/patches/mt7530c.v5.9.patch

@@ -0,0 +1,53 @@
+diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c
+index 1aaf47a0da2b..a2b5372d9dd6 100644
+--- a/drivers/net/dsa/mt7530.c
++++ b/drivers/net/dsa/mt7530.c
+@@ -1223,6 +1223,7 @@ mt7530_setup(struct dsa_switch *ds)
+ 	ds->configure_vlan_while_not_filtering = true;
+ 
+ 	if (priv->id == ID_MT7530) {
++	    /*
+ 		regulator_set_voltage(priv->core_pwr, 1000000, 1000000);
+ 		ret = regulator_enable(priv->core_pwr);
+ 		if (ret < 0) {
+@@ -1238,6 +1239,7 @@ mt7530_setup(struct dsa_switch *ds)
+ 				ret);
+ 			return ret;
+ 		}
++	    */
+ 	}
+ 
+ 	/* Reset whole chip through gpio pin or memory-mapped registers for
+@@ -1633,6 +1635,7 @@ mt7530_probe(struct mdio_device *mdiodev)
+ 	priv->id = (unsigned int)(unsigned long)
+ 		of_device_get_match_data(&mdiodev->dev);
+ 
++	/*
+ 	if (priv->id == ID_MT7530) {
+ 		priv->core_pwr = devm_regulator_get(&mdiodev->dev, "core");
+ 		if (IS_ERR(priv->core_pwr))
+@@ -1642,6 +1645,7 @@ mt7530_probe(struct mdio_device *mdiodev)
+ 		if (IS_ERR(priv->io_pwr))
+ 			return PTR_ERR(priv->io_pwr);
+ 	}
++	*/
+ 
+ 	/* Not MCM that indicates switch works as the remote standalone
+ 	 * integrated circuit so the GPIO pin would be used to complete
+@@ -1673,6 +1677,7 @@ mt7530_remove(struct mdio_device *mdiodev)
+ 	struct mt7530_priv *priv = dev_get_drvdata(&mdiodev->dev);
+ 	int ret = 0;
+ 
++	/*
+ 	ret = regulator_disable(priv->core_pwr);
+ 	if (ret < 0)
+ 		dev_err(priv->dev,
+@@ -1682,7 +1687,7 @@ mt7530_remove(struct mdio_device *mdiodev)
+ 	if (ret < 0)
+ 		dev_err(priv->dev, "Failed to disable io pwr: %d\n",
+ 			ret);
+-
++	*/
+ 	dsa_unregister_switch(priv->ds);
+ 	mutex_destroy(&priv->reg_mutex);
+ }