ALSA: hda/conexant: Mute speakers at suspend / shutdown

Use the new helper to mute speakers at suspend / shutdown for avoiding
click noises.

Link: https://bugzilla.suse.com/show_bug.cgi?id=1228269
Link: https://patch.msgid.link/20240726142625.2460-2-tiwai@suse.deSigned-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/patch_conexant.c

@@ -205,6 +205,8 @@ static void cx_auto_shutdown(struct hda_codec *codec)
 {
 	struct conexant_spec *spec = codec->spec;
 
+	snd_hda_gen_shutup_speakers(codec);
+
 	/* Turn the problematic codec into D3 to avoid spurious noises
 	   from the internal speaker during (and after) reboot */
 	cx_auto_turn_eapd(codec, spec->num_eapds, spec->eapds, false);