Backport lots upstream changes, many of them fixes, for the mt7530 DSA
driver, similar to how it was done for Linux 6.1 in the previous commit.
The remaining differences compared to the upstream driver are only
the 'slave' -> 'user', 'master' -> 'conduit' language change in DSA
and the rename of 'struct ethtool_eee' to 'struct ethtool_keee' as
well as tree-wide replacement of ethtool_sprintf with ethtool_puts,
all of them do not have any functional impact.
Apart from some minor bug fixes and style improvements the switch
should now behave more conformant when it comes to link-local frames,
and we will again be able to cleanly pick patches from upstream.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
