Merge branch 'net-renesas-cleanup-usage-of-gptp-flags'

Niklas Söderlund says:

====================
net: renesas: Cleanup usage of gPTP flags

This series aim is to prepare for future work that will enable the use
of gPTP on R-Car RAVB on Gen4. Currently RAVB have a dedicated gPTP
implementation supported on Gen2 and Gen3 (ravb_ptp.c). For Gen4 a new
implementation that is already upstream (rcar_gen4_ptp.c) and used by
other Gen4 devices such as RTSN and RSWITCH is needed.

Unfortunately the design of the Gen2/Gen3 RAVB driver where driver
specific flags to control gPTP behavior have been mimicked in RTSN and
RSWITCH. This was OK as there was no overlap between the two gPTP
implementations. Now that RAVB needs to be able to use both having to
translate between driver specific flags and common net code flags
becomes even more cumbersome as there are two sets of driver specific
flags to pick from.

This series cleans this up for all Renesas drivers using gPTP by
removing all driver specific flags and using the common flags directly.
This simplifies drivers while at the same time prepare RAVB to be
extended with Gen4 support.

Patch 1/7 is a drive by patch where RSWITCH specific define was added in
the wrong header. Patch 2/7 removes a short-cut used in RTSN and RSWITCH
that prevents extending Gen4 support to RAVB without fuss. While patch
3/7 to 7/7 rework the Renesas drivers to use the common flags instead of
driver specific ones.

There is no intentional behavior change and only a small rework in logic
in the RAVB driver. Looking at patch 3/7, 4/7 and 7/7 one can clearly
see how the code have been copied from RAVB to the later implementations
in RTSN and RSWITCH.
====================

Link: https://patch.msgid.link/20251104222420.882731-1-niklas.soderlund+renesas@ragnatech.se
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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