kernel: bump 6.6 to 6.6.50

kernel: bump 6.6 to 6.6.50

Changelog: https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.50

All patch automatically rebased.

Test version: r27317-8e6543fae5
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/16351
Signed-off-by: Nick Hainke <vincent@systemli.org>