ALSA: hda - Apply codec power_filter to FG nodes

Apply the codec->power_filter to the FG nodes in general for reducing
hackish set_power_state ops override in patch_sigmatel.c.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --cc sound/pci/hda/hda_codec.c
Simple merge

diff --cc sound/pci/hda/hda_generic.c
Simple merge

diff --cc sound/pci/hda/hda_generic.h
Simple merge

diff --cc sound/pci/hda/patch_sigmatel.c
Simple merge