kernel: Remove patch for fixed bug

The problem was fixed in upstream kernel in a different way and the
change was backported to kernel 6.6 in the following change:
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-6.6.y&id=48e8791843206baf76827df1b6ee3cb88a2a17d8

The removed patch changes the endianness again and breaks the
functionality, use only the upstream code and remove our unneeded patch.

The 823-v6.12-0003-nvmem-layouts-add-U-Boot-env-layout.patch patch was
adapted in the kernel bump too. It moves the code with the fix now.

Fixes: 05d344cb2ca3 ("kernel: bump 6.6 to 6.6.100")
Reported-by: Michael Pratt <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/19830
(cherry picked from commit 4cd256c72a7e823e55475786eb1f2a1f7ffcd497)
Link: https://github.com/openwrt/openwrt/pull/19839
Signed-off-by: Hauke Mehrtens <[email protected]>

target/linux/generic/pending-6.6/802-nvmem-u-boot-env-align-endianness-of-crc32-values.patch

@@ -1,45 +0,0 @@
-From 0e71cac033bb7689c4dfa2e6814191337ef770f5 Mon Sep 17 00:00:00 2001
-From: INAGAKI Hiroshi <[email protected]>
-Date: Thu, 13 Oct 2022 00:51:33 +0900
-Subject: [PATCH] nvmem: layouts: u-boot-env: align endianness of crc32 values
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-This patch fixes crc32 error on Big-Endianness system by conversion of
-calculated crc32 value.
-
-Little-Endianness system:
-
-  obtained crc32: Little
-calculated crc32: Little
-
-Big-Endianness system:
-
-  obtained crc32: Little
-calculated crc32: Big
-
-log (APRESIA ApresiaLightGS120GT-SS, RTL8382M, Big-Endianness):
-
-[    8.570000] u_boot_env 18001200.spi:flash@0:partitions:partition@c0000: Invalid calculated CRC32: 0x88cd6f09 (expected: 0x096fcd88)
-[    8.580000] u_boot_env: probe of 18001200.spi:flash@0:partitions:partition@c0000 failed with error -22
-
-Fixes: f955dc1445069 ("nvmem: add driver handling U-Boot environment variables")
-
-Signed-off-by: INAGAKI Hiroshi <[email protected]>
-Acked-by: Rafał Miłecki <[email protected]>
-Tested-by: Christian Lamparter <[email protected]>
-Signed-off-by: Srinivas Kandagatla <[email protected]>
----
-
---- a/drivers/nvmem/layouts/u-boot-env.c
-+++ b/drivers/nvmem/layouts/u-boot-env.c
-@@ -148,7 +148,7 @@ int u_boot_env_parse(struct device *dev,
- 	crc32_data_len = dev_size - crc32_data_offset;
- 	data_len = dev_size - data_offset;
- 
--	calc = crc32(~0, buf + crc32_data_offset, crc32_data_len) ^ ~0L;
-+	calc = le32_to_cpu((__le32)crc32(~0, buf + crc32_data_offset, crc32_data_len) ^ ~0L);
- 	if (calc != crc32) {
- 		dev_err(dev, "Invalid calculated CRC32: 0x%08x (expected: 0x%08x)\n", calc, crc32);
- 		err = -EINVAL;