ALSA: Separate common pxa2xx-ac97 code

ASoC and non-ASoC drivers for ACLINK on PXA share lot's of common code.
Move all common code into separate module snd-pxa2xx-lib.

[Fixed handing of SND_AC97_CODEC in Kconfig and some checkpatch warnings
 -- broonie]

Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
diff --git a/sound/soc/pxa/Kconfig b/sound/soc/pxa/Kconfig
index 9212c37..d1ccbdc 100644
--- a/sound/soc/pxa/Kconfig
+++ b/sound/soc/pxa/Kconfig
@@ -13,6 +13,8 @@
 config SND_PXA2XX_SOC_AC97
 	tristate
 	select AC97_BUS
+	select SND_ARM
+	select SND_PXA2XX_LIB
 	select SND_SOC_AC97_BUS
 
 config SND_PXA2XX_SOC_I2S