Add support for R-Car S4.
Signed-off-by: NWolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: NNiklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20220705195520.2581-1-wsa+renesas@sang-engineering.comSigned-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org>