ALSA: at73c213: Use dev_pm_ops

Use dev_pm_ops instead of the deprecated legacy suspend/resume callbacks.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Signed-off-by: Takashi Iwai <tiwai@suse.de>