[ALSA] Fix AC97_BUS in soc/pxa/Kconfig

Fixed the renamed AC97_BUS in soc/pxa/Kconfig file.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NJaroslav Kysela <perex@suse.cz>

sound/soc/pxa/Kconfig

@@ -15,7 +15,7 @@ config SND_PXA2XX_AC97
 
 config SND_PXA2XX_SOC_AC97
 	tristate
-	select SND_AC97_BUS
+	select AC97_BUS
 	select SND_SOC_AC97_BUS
 
 config SND_PXA2XX_SOC_I2S