ALSA: ac97 - Include ac97_codec.h for ac97_bus_type declaration

This fixes a sparse warning caused by the lack of a connection with the
prototype for ac97_bus_type.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
1 file changed