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, 59 deletions

diff --git a/target/linux/layerscape/patches-5.4/303-core-0001-net-readd-skb_recycle.patch b/target/linux/layerscape/patches-5.4/303-core-0001-net-readd-skb_recycle.patch
deleted file mode 100644
index e296df502e..0000000000
--- a/target/linux/layerscape/patches-5.4/303-core-0001-net-readd-skb_recycle.patch
+++ /dev/null
@@ -1,59 +0,0 @@
-From 446a17652a69f749dd7a50b28e984c4904dc3aaf Mon Sep 17 00:00:00 2001
-From: Madalin Bucur <madalin.bucur@freescale.com>
-Date: Tue, 5 Jan 2016 12:12:07 +0200
-Subject: [PATCH] net: readd skb_recycle()
-
-Adding back skb_recycle() as it's used by the DPAA Ethernet driver.
-This was removed from the upstream kernel because it was lacking users.
-
-Signed-off-by: Madalin Bucur <madalin.bucur@freescale.com>
----
- include/linux/skbuff.h |  1 +
- net/core/skbuff.c      | 26 ++++++++++++++++++++++++++
- 2 files changed, 27 insertions(+)
-
---- a/include/linux/skbuff.h
-+++ b/include/linux/skbuff.h
-@@ -1025,6 +1025,7 @@ void skb_dump(const char *level, const s
- void skb_tx_error(struct sk_buff *skb);
- void consume_skb(struct sk_buff *skb);
- void __consume_stateless_skb(struct sk_buff *skb);
-+void skb_recycle(struct sk_buff *skb);
- void  __kfree_skb(struct sk_buff *skb);
- extern struct kmem_cache *skbuff_head_cache;
- 
---- a/net/core/skbuff.c
-+++ b/net/core/skbuff.c
-@@ -945,6 +945,32 @@ void napi_consume_skb(struct sk_buff *sk
- }
- EXPORT_SYMBOL(napi_consume_skb);
- 
-+/**
-+ * 	skb_recycle - clean up an skb for reuse
-+ * 	@skb: buffer
-+ *
-+ * 	Recycles the skb to be reused as a receive buffer. This
-+ * 	function does any necessary reference count dropping, and
-+ * 	cleans up the skbuff as if it just came from __alloc_skb().
-+ */
-+void skb_recycle(struct sk_buff *skb)
-+{
-+	struct skb_shared_info *shinfo;
-+	u8 head_frag = skb->head_frag;
-+
-+	skb_release_head_state(skb);
-+
-+	shinfo = skb_shinfo(skb);
-+	memset(shinfo, 0, offsetof(struct skb_shared_info, dataref));
-+	atomic_set(&shinfo->dataref, 1);
-+
-+	memset(skb, 0, offsetof(struct sk_buff, tail));
-+	skb->data = skb->head + NET_SKB_PAD;
-+	skb->head_frag = head_frag;
-+	skb_reset_tail_pointer(skb);
-+}
-+EXPORT_SYMBOL(skb_recycle);
-+
- /* Make sure a field is enclosed inside headers_start/headers_end section */
- #define CHECK_SKB_FIELD(field) \
- 	BUILD_BUG_ON(offsetof(struct sk_buff, field) <		\