Import commits from upstream Linux replacing some downstream patches.
Move accepted patches from pending-{5.15,6.1} to backport-{5.15,6.1}.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Import some accepted and pending upstream patches for mtk_eth_soc,
replacing some semantically equivalent local patches and fixing issues
when operating the PCS in 1G SGMII mode.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>