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, 58 deletions

diff --git a/target/linux/generic/backport-5.4/080-wireguard-0049-crypto-arm-chacha-fix-build-failured-when-kernel-mod.patch b/target/linux/generic/backport-5.4/080-wireguard-0049-crypto-arm-chacha-fix-build-failured-when-kernel-mod.patch
deleted file mode 100644
index 354f584315..0000000000
--- a/target/linux/generic/backport-5.4/080-wireguard-0049-crypto-arm-chacha-fix-build-failured-when-kernel-mod.patch
+++ /dev/null
@@ -1,58 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Ard Biesheuvel <ardb@kernel.org>
-Date: Fri, 17 Jan 2020 17:43:18 +0100
-Subject: [PATCH] crypto: arm/chacha - fix build failured when kernel mode NEON
- is disabled
-
-commit 0bc81767c5bd9d005fae1099fb39eb3688370cb1 upstream.
-
-When the ARM accelerated ChaCha driver is built as part of a configuration
-that has kernel mode NEON disabled, we expect the compiler to propagate
-the build time constant expression IS_ENABLED(CONFIG_KERNEL_MODE_NEON) in
-a way that eliminates all the cross-object references to the actual NEON
-routines, which allows the chacha-neon-core.o object to be omitted from
-the build entirely.
-
-Unfortunately, this fails to work as expected in some cases, and we may
-end up with a build error such as
-
-  chacha-glue.c:(.text+0xc0): undefined reference to `chacha_4block_xor_neon'
-
-caused by the fact that chacha_doneon() has not been eliminated from the
-object code, even though it will never be called in practice.
-
-Let's fix this by adding some IS_ENABLED(CONFIG_KERNEL_MODE_NEON) tests
-that are not strictly needed from a logical point of view, but should
-help the compiler infer that the NEON code paths are unreachable in
-those cases.
-
-Fixes: b36d8c09e710c71f ("crypto: arm/chacha - remove dependency on generic ...")
-Reported-by: Russell King <linux@armlinux.org.uk>
-Cc: Arnd Bergmann <arnd@arndb.de>
-Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
-Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
-Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
----
- arch/arm/crypto/chacha-glue.c | 4 ++--
- 1 file changed, 2 insertions(+), 2 deletions(-)
-
---- a/arch/arm/crypto/chacha-glue.c
-+++ b/arch/arm/crypto/chacha-glue.c
-@@ -115,7 +115,7 @@ static int chacha_stream_xor(struct skci
- 		if (nbytes < walk.total)
- 			nbytes = round_down(nbytes, walk.stride);
- 
--		if (!neon) {
-+		if (!IS_ENABLED(CONFIG_KERNEL_MODE_NEON) || !neon) {
- 			chacha_doarm(walk.dst.virt.addr, walk.src.virt.addr,
- 				     nbytes, state, ctx->nrounds);
- 			state[12] += DIV_ROUND_UP(nbytes, CHACHA_BLOCK_SIZE);
-@@ -159,7 +159,7 @@ static int do_xchacha(struct skcipher_re
- 
- 	chacha_init_generic(state, ctx->key, req->iv);
- 
--	if (!neon) {
-+	if (!IS_ENABLED(CONFIG_KERNEL_MODE_NEON) || !neon) {
- 		hchacha_block_arm(state, subctx.key, ctx->nrounds);
- 	} else {
- 		kernel_neon_begin();