* kernel: bump 5.15 to 5.15.81
Manually rebased:
backport-5.15/715-v6.0-net-ethernet-mtk_eth_soc-add-the-capability-to-run-m.patch
hack-5.15/645-netfilter-connmark-introduce-set-dscpmark.patch[1]
All other patches automatically rebased
Signed-off-by: John Audia <therealgraysky@proton.me>
Co-authored-by: John Audia <therealgraysky@proton.me>