[ALSA] s3c2443-ac97: compilation fix

The Samsung S3C24xx uses new architecture file layout in the post 2.6.23
kernel.  This patch fixes include path for the s3c2443-ac97.c.

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>