ALSA: cs4236: cs4232 and cs4236 driver merge to solve PnP BIOS detection

cs4232 and cs4236 driver merge to solve PnP BIOS detection.

Also, the patch adds recognition if the chip is cs4236b+
or earlier part. This unifies drivers for both cs4232
and cs4236+ chips. It allows to use the PnP BIOS
detection for the cs4236+ chips. Previously, only
the snd-cs4232 could be detected by the PnP BIOS.

The cs4232+ cards reports two separate PnP BIOS ids.

The patch adds search for the second id to find out
resources assigned to a control port.

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/include/sound/wss.h b/include/sound/wss.h
index fd01f22..6d65f32 100644
--- a/include/sound/wss.h
+++ b/include/sound/wss.h
@@ -154,6 +154,7 @@
 		      unsigned short hardware,
 		      unsigned short hwshare,
 		      struct snd_wss **rchip);
+int snd_wss_free(struct snd_wss *chip);
 int snd_wss_pcm(struct snd_wss *chip, int device, struct snd_pcm **rpcm);
 int snd_wss_timer(struct snd_wss *chip, int device, struct snd_timer **rtimer);
 int snd_wss_mixer(struct snd_wss *chip);