pinctrl: single: remove get rid of __maybe_unused

These are always used in pcs_probe().

While I was here, I also changed 'unsigned' in the same line to
'unsigned int' to address the checkpatch warnings:

  WARNING: Prefer 'unsigned int' to bare use of 'unsigned'

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Link: https://lore.kernel.org/r/20230824064508.968142-1-masahiroy@kernel.org


Signed-off-by: Linus Walleij <linus.walleij@linaro.org>