ALSA: hda - Add card field to hda_codec struct

Allow the codec object to have an individual card pointer.  Not only
this simplifies the redirections in many places, also this will allow
us to make each codec assigned to a different card object.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/hda_beep.c

@@ -160,7 +160,7 @@ static int snd_hda_do_attach(struct hda_beep *beep)
 	input_dev->name = "HDA Digital PCBeep";
 	input_dev->phys = beep->phys;
 	input_dev->id.bustype = BUS_PCI;
-	input_dev->dev.parent = &codec->bus->card->card_dev;
+	input_dev->dev.parent = &codec->card->card_dev;
 
 	input_dev->id.vendor = codec->vendor_id >> 16;
 	input_dev->id.product = codec->vendor_id & 0xffff;
@@ -224,7 +224,7 @@ int snd_hda_attach_beep_device(struct hda_codec *codec, int nid)
 	if (beep == NULL)
 		return -ENOMEM;
 	snprintf(beep->phys, sizeof(beep->phys),
-		"card%d/codec#%d/beep0", codec->bus->card->number, codec->addr);
+		"card%d/codec#%d/beep0", codec->card->number, codec->addr);
 	/* enable linear scale */
 	snd_hda_codec_write_cache(codec, nid, 0,
 		AC_VERB_SET_DIGI_CONVERT_2, 0x01);