[ALSA] Don't probe sample rates on non-VRA chips

ES1968 driver,CA0106 driver,EMU10K1/EMU10K2 driver
Don't probe sample rates on chips which need no VRA.
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/ca0106/ca0106_main.c

@@ -801,6 +801,8 @@ static int snd_ca0106_ac97(ca0106_t *chip)
   
 	if ((err = snd_ac97_bus(chip->card, 0, &ops, NULL, &pbus)) < 0)
 		return err;
+	pbus->no_vra = 1; /* we don't need VRA */
+
 	memset(&ac97, 0, sizeof(ac97));
 	ac97.private_data = chip;
 	return snd_ac97_mixer(pbus, &ac97, &chip->ac97);

sound/pci/emu10k1/emu10k1x.c

@@ -745,6 +745,8 @@ static int snd_emu10k1x_ac97(emu10k1x_t *chip)
   
 	if ((err = snd_ac97_bus(chip->card, 0, &ops, NULL, &pbus)) < 0)
 		return err;
+	pbus->no_vra = 1; /* we don't need VRA */
+
 	memset(&ac97, 0, sizeof(ac97));
 	ac97.private_data = chip;
 	return snd_ac97_mixer(pbus, &ac97, &chip->ac97);

sound/pci/emu10k1/emumixer.c

@@ -519,6 +519,7 @@ int __devinit snd_emu10k1_mixer(emu10k1_t *emu)
 
 		if ((err = snd_ac97_bus(emu->card, 0, &ops, NULL, &pbus)) < 0)
 			return err;
+		pbus->no_vra = 1; /* we don't need VRA */
 		
 		memset(&ac97, 0, sizeof(ac97));
 		ac97.private_data = emu;

sound/pci/es1968.c

@@ -2037,6 +2037,7 @@ snd_es1968_mixer(es1968_t *chip)
 
 	if ((err = snd_ac97_bus(chip->card, 0, &ops, NULL, &pbus)) < 0)
 		return err;
+	pbus->no_vra = 1; /* ES1968 doesn't need VRA */
 
 	memset(&ac97, 0, sizeof(ac97));
 	ac97.private_data = chip;