ALSA: usbaudio: Fix wrong bitrate for Creative Creative VF0470 Live Cam

This patch works around misbehaviour of Creative Creative VF0470 Live Cam
which reports 16 kHz sample rate for audio capture while actually producing
8 kHz stream.
Signed-off-by: Arseniy Lartsev <arseniy@fizlesh.ru>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/usb/usbaudio.c

@@ -2581,6 +2581,9 @@ static int parse_audio_format_rates_v1(struct snd_usb_audio *chip, struct audiof
 			     chip->usb_id == USB_ID(0x0d8c, 0x0102)) &&
 			    fp->altsetting == 5 && fp->maxpacksize == 392)
 				rate = 96000;
+			/* Creative VF0470 Live Cam reports 16 kHz instead of 8kHz */
+			if (rate == 16000 && chip->usb_id == USB_ID(0x041e, 0x4068))
+				rate = 8000;
 			fp->rate_table[fp->nr_rates] = rate;
 			if (!fp->rate_min || rate < fp->rate_min)
 				fp->rate_min = rate;