Use RUNTIME_PM_OPS() instead of the old SET_RUNTIME_PM_OPS().
This means we don't need  __maybe_unused on the functions.

Fixes: 73cfbfa9 ("ALSA: hda/cs35l56: Add driver for Cirrus Logic CS35L56 amplifier")
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20230919081153.19793-1-rf@opensource.cirrus.comSigned-off-by: Takashi Iwai <tiwai@suse.de>