kernel: bump 6.6 to 6.6.57

kernel: bump 6.6 to 6.6.57

1. Update target/linux/generic/config-6.6 for new ksym
2. Refresh patches

Changelog: https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.57

Added:
	generic/backport-6.6/777-netfilter-xtables-fix-typo-causing-some-targets-to-not-load-on-IPv6.patch[1]

Manually rebased:
	generic/hack-6.6/645-netfilter-connmark-introduce-set-dscpmark.patch

Removed upstreamed:
	gemini/patches-6.6/0001-net-ethernet-cortina-Drop-TSO-support.patch[2]
	gemini/patches-6.6/0004-net-ethernet-cortina-Restore-TSO-support.patch[3]

All other patches automatically rebased.

1. https://lore.kernel.org/all/20241019-xtables-typos-v2-1-6b8b1735dc8e@0upti.me/
2 https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.6.57&id=452c0740d72c6a77a41f6ddc318a48f18c3d2346
3. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.6.57&id=611f74b0e7fb93ee2366d9d7edca546806b220e9

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/16726
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>