[ALSA] sound: Don't include i2c-dev.h

Don't include <linux/i2c-dev.h> as it's not needed.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>