[ALSA] soc - ln2440sbc ac97 support

This patch adds ac97 support for ln2440sbc board from LittleChips.
This board is based on s3c2440 SoC + AC97 Realtek ALC650 codec.
Existing s3c2443 implementation is slightly modified because s3c2440
and s3c2443 have different AC97 interrupts.

Signed-off-by: Ivan Kuten <ivan.kuten@promwad.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
diff --git a/sound/soc/s3c24xx/Kconfig b/sound/soc/s3c24xx/Kconfig
index 5632a2e..14def2e 100644
--- a/sound/soc/s3c24xx/Kconfig
+++ b/sound/soc/s3c24xx/Kconfig
@@ -34,4 +34,12 @@
 	  Say Y if you want to add support for SoC audio on smdk2443
 	  with the WM9710.
 
+config SND_S3C24XX_SOC_LN2440SBC_ALC650
+	tristate "SoC AC97 Audio support for LN2440SBC - ALC650"
+	depends on SND_S3C24XX_SOC
+	select SND_S3C2443_SOC_AC97
+	select SND_SOC_AC97_CODEC
+	help
+	  Say Y if you want to add support for SoC audio on ln2440sbc
+	  with the ALC650.