[ALSA] hda - increase max_codecs of ICH to 4

It turned out that some ICH9-based boards use SD3 for the audio codec
where the current driver code doesn't probe.  Since we have a better
codec slot check now, it must be safe to increase this to 4.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

sound/pci/hda/hda_intel.c

@@ -1104,7 +1104,7 @@ static int azx_setup_controller(struct azx *chip, struct azx_dev *azx_dev)
  */
 
 static unsigned int azx_max_codecs[] __devinitdata = {
-	[AZX_DRIVER_ICH] = 3,
+	[AZX_DRIVER_ICH] = 4,		/* Some ICH9 boards use SD3 */
 	[AZX_DRIVER_SCH] = 3,
 	[AZX_DRIVER_ATI] = 4,
 	[AZX_DRIVER_ATIHDMI] = 4,