pmdomain: renesas: rcar-sysc: Drop fwnode_dev_initialized() call

As of commit bab2d712 ("PM: domains: Mark fwnodes when their
powerdomain is added/removed") in v5.12, the pmdomain core takes care of
marking the fwnode initialized, so there is no need to repeat it.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Saravana Kannan <saravanak@google.com>
Link: https://lore.kernel.org/r/05c2ef630694a28b560426d8c426881cc14e8f7c.1738748678.git.geert+renesas@glider.be


Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>