ramips: add support for kernel 5.10

Enable testing kernel.

Delete upstreamed patches:
 0098-disable_cm.patch can be dropped, upstream fixed CM handling.

Fix compile errors by using new kernel APIs.

Fix fuzz by manually editing patches to ensure the code goes in the
right place.

For 721-NET-no-auto-carrier-off-support.patch, revert upstream commit
a307593a6 to keep the OpenWrt ralink driver operational.

Add mt7621-pci-phy patch to select REGMAP_MMIO as discussed in PR #3693
and #3952.

Rename patches to follow the 3-digit classification from the OpenWrt
Developer Guide.

Run automatic quilt refresh.

Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>

1 files changed, 47 insertions, 0 deletions

diff --git a/target/linux/ramips/patches-5.10/721-NET-no-auto-carrier-off-support.patch b/target/linux/ramips/patches-5.10/721-NET-no-auto-carrier-off-support.patch
new file mode 100644
index 0000000000..09170ab632
--- /dev/null
+++ b/target/linux/ramips/patches-5.10/721-NET-no-auto-carrier-off-support.patch
@@ -0,0 +1,47 @@
+From 0b6eb1e68290243d439ee330ea8d0b239a5aec69 Mon Sep 17 00:00:00 2001
+From: John Crispin <blogic@openwrt.org>
+Date: Sun, 27 Jul 2014 09:38:50 +0100
+Subject: [PATCH 34/53] NET: multi phy support
+
+Signed-off-by: John Crispin <blogic@openwrt.org>
+---
+ drivers/net/phy/phy.c |    9 ++++++---
+ include/linux/phy.h   |    1 +
+ 2 files changed, 7 insertions(+), 3 deletions(-)
+
+--- a/drivers/net/phy/phy.c
++++ b/drivers/net/phy/phy.c
+@@ -758,7 +758,10 @@ static int phy_check_link_status(struct
+ 		phy_link_up(phydev);
+ 	} else if (!phydev->link && phydev->state != PHY_NOLINK) {
+ 		phydev->state = PHY_NOLINK;
+-		phy_link_down(phydev, true);
++		if (!phydev->no_auto_carrier_off)
++			phy_link_down(phydev, true);
++		else
++			phy_link_down(phydev, false);
+ 	}
+ 
+ 	return 0;
+@@ -1162,7 +1165,10 @@ void phy_state_machine(struct work_struc
+ 	case PHY_HALTED:
+ 		if (phydev->link) {
+ 			phydev->link = 0;
+-			phy_link_down(phydev, true);
++			if (!phydev->no_auto_carrier_off)
++				phy_link_down(phydev, true);
++			else
++				phy_link_down(phydev, false);
+ 		}
+ 		do_suspend = true;
+ 		break;
+--- a/include/linux/phy.h
++++ b/include/linux/phy.h
+@@ -556,6 +556,7 @@ struct phy_device {
+ 	unsigned sysfs_links:1;
+ 	unsigned loopback_enabled:1;
+ 	unsigned downshifted_rate:1;
++	unsigned no_auto_carrier_off:1;
+ 
+ 	unsigned autoneg:1;
+ 	/* The most recently read link state */