soc: renesas: rcar-mfis: Add hwspinlock support

Every MFIS instance has a block of hardware spinlocks.  Add support for
them.  R-Car Gen4 has only one instance, so the base_id is always 0.
R-Car Gen5 has multiple instances, so the base_id has to be encoded in
the info description.  Also being a provider, a hwspinlock-private
header needs to be included.  Work to refactor the headers is on-going,
but will need many preparational steps.  Until then, we need to live
with the special include.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20260817095447.34693-3-wsa+renesas@sang-engineering.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

0 files changed, 0 insertions, 0 deletions