[ALSA] WM9713 modem detection

AC97 Codec
This patch fixes a problem whereby the WM9713 has modem functionality
incorrectly detected after an AC97 cold reset.

Changes:-

  o Cleared AC97_SCAP_MODEM in wm9713 scaps
Signed-off-by: NLiam Girdwood <liam.girdwood@wolfsonmicro.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

sound/pci/ac97/ac97_patch.c

@@ -786,6 +786,7 @@ int patch_wolfson13(ac97_t * ac97)
 	ac97->flags |= AC97_HAS_NO_REC_GAIN | AC97_STEREO_MUTES | AC97_HAS_NO_PHONE |
 		AC97_HAS_NO_PC_BEEP | AC97_HAS_NO_VIDEO | AC97_HAS_NO_CD | AC97_HAS_NO_TONE |
 		AC97_HAS_NO_STD_PCM;
+    	ac97->scaps &= ~AC97_SCAP_MODEM;
 
 	snd_ac97_write_cache(ac97, AC97_EXTENDED_MID, 0xda00);
 	snd_ac97_write_cache(ac97, AC97_EXTENDED_MSTATUS, 0x3810);