Fix LFE controls for Dell Inspiron E1705/9400 and XPS M1710 laptops.
Signed-off-by: NMikael Nilsson <mikael@nilsson.name>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NJaroslav Kysela <perex@suse.cz>