ALSA: hda/hdmi: Simplify the pcm_idx condition in hdmi_pcm_setup_pin()

Make the code more readable.

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Link: https://lore.kernel.org/r/20220921093322.82609-1-perex@perex.cz


Signed-off-by: Takashi Iwai <tiwai@suse.de>