kernel: bump 6.6 to 6.6.52

kernel: bump 6.6 to 6.6.52

Changelog: https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.52

Removed upstreamed:
backport-6.6/819-v6.8-0010-nvmem-core-add-nvmem_dev_size-helper.patch[1]
backport-6.6/819-v6.8-0011-nvmem-u-boot-env-use-nvmem_add_one_cell-nvmemsubsys.patch[2]
backport-6.6/819-v6.8-0012-nvmem-u-boot-env-use-nvmem-device-helpers.patch[3]
backport-6.6/819-v6.8-0013-nvmem-u-boot-env-improve-coding-style.patch[4]
backport-6.6/822-v6.11-0011-nvmem-u-boot-env-error-if-NVMEM-device-is-too-small.patch[5]

Manually rebased:
starfive/patches-6.6/0048-riscv-dts-starfive-Add-full-support-except-VIN-and-V.patch

All other patches automatically rebased.

1. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.6.52&id=820b1b981aeb8b8e60db2835ddd430c9d1bc6072
2. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.6.52&id=ae91c9c7b67d4d47206fe8cbb2ab89687d283dcc
3. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.6.52&id=2eea394c31cbc3d853a26ef2ddb8f5bd24d4d002
4. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.6.52&id=368fa77b7945bdbdf0e3bb26b5abcae4fba25a20
5. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.6.52&id=2278629c3ebb1a912fe0a1f19f088312600742a4

Build system: x86/64
Build-tested: x86/64/AMD Cezanne, flogic/xiaomi_redmi-router-ax6000-ubootmod, ramips/tplink_archer-a6-v3
Run-tested: x86/64/AMD Cezanne, flogic/xiaomi_redmi-router-ax6000-ubootmod, ramips/tplink_archer-a6-v3

Signed-off-by: John Audia <therealgraysky@proton.me>
Link: https://github.com/openwrt/openwrt/pull/16422
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>