[ALSA] intel8x0 - Fix speaker output after S2RAM

Fixed the mute speaker problem after S2RAM on some laptops:
	http://bugme.osdl.org/show_bug.cgi?id=6181



Signed-off-by: Tommi Kyntola <tommi.kyntola@ray.fi>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>