kernel: delete Linux 5.4 config and patches

As the upcoming release will be based on Linux 5.10 only, remove all
kernel configuration as well as patches for Linux 5.4.
There were no targets still actively using Linux 5.4.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
(cherry picked from commit 3a14580411adfb75f9a44eded9f41245b9e44606)

1 files changed, 0 insertions, 67 deletions

diff --git a/target/linux/generic/backport-5.4/771-mdio-bus-add-generic-find-bus.patch b/target/linux/generic/backport-5.4/771-mdio-bus-add-generic-find-bus.patch
deleted file mode 100644
index b79fa0f18a..0000000000
--- a/target/linux/generic/backport-5.4/771-mdio-bus-add-generic-find-bus.patch
+++ /dev/null
@@ -1,67 +0,0 @@
-From ce69e2162f158d9d4a0e513971d02dabc7d14cb7 Mon Sep 17 00:00:00 2001
-From: Jeremy Linton <jeremy.linton@arm.com>
-Date: Mon, 24 Feb 2020 16:53:58 -0600
-Subject: [PATCH] mdio_bus: Add generic mdio_find_bus()
-
-It appears most ethernet drivers follow one of two main strategies
-for mdio bus/phy management. A monolithic model where the net driver
-itself creates, probes and uses the phy, and one where an external
-mdio/phy driver instantiates the mdio bus/phy and the net driver
-only attaches to a known phy. Usually in this latter model the phys
-are discovered via DT relationships or simply phy name/address
-hardcoding.
-
-This is a shame because modern well behaved mdio buses are self
-describing and can be probed. The mdio layer itself is fully capable
-of this, yet there isn't a clean way for a standalone net driver
-to attach and enumerate the discovered devices. This is because
-outside of of_mdio_find_bus() there isn't a straightforward way
-to acquire the mii_bus pointer.
-
-So, lets add a mdio_find_bus which can return the mii_bus based
-only on its name.
-
-Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
-Acked-by: Florian Fainelli <f.fainelli@gmail.com>
-Signed-off-by: David S. Miller <davem@davemloft.net>
----
- drivers/net/phy/mdio_bus.c | 17 +++++++++++++++++
- include/linux/phy.h        |  1 +
- 2 files changed, 18 insertions(+)
-
---- a/drivers/net/phy/mdio_bus.c
-+++ b/drivers/net/phy/mdio_bus.c
-@@ -260,6 +260,23 @@ static struct class mdio_bus_class = {
- 	.dev_release	= mdiobus_release,
- };
- 
-+/**
-+ * mdio_find_bus - Given the name of a mdiobus, find the mii_bus.
-+ * @mdio_bus_np: Pointer to the mii_bus.
-+ *
-+ * Returns a reference to the mii_bus, or NULL if none found.  The
-+ * embedded struct device will have its reference count incremented,
-+ * and this must be put_deviced'ed once the bus is finished with.
-+ */
-+struct mii_bus *mdio_find_bus(const char *mdio_name)
-+{
-+	struct device *d;
-+
-+	d = class_find_device_by_name(&mdio_bus_class, mdio_name);
-+	return d ? to_mii_bus(d) : NULL;
-+}
-+EXPORT_SYMBOL(mdio_find_bus);
-+
- #if IS_ENABLED(CONFIG_OF_MDIO)
- /**
-  * of_mdio_find_bus - Given an mii_bus node, find the mii_bus.
---- a/include/linux/phy.h
-+++ b/include/linux/phy.h
-@@ -273,6 +273,7 @@ static inline struct mii_bus *devm_mdiob
- 	return devm_mdiobus_alloc_size(dev, 0);
- }
- 
-+struct mii_bus *mdio_find_bus(const char *mdio_name);
- void devm_mdiobus_free(struct device *dev, struct mii_bus *bus);
- struct phy_device *mdiobus_scan(struct mii_bus *bus, int addr);
-