ALSA: hda - Control SPDIF out pin on MacBookPro 11,2

The SPDIF output MBP11,2 requires the pin control to be set/cleared
for turning on/off the optical SPDIF.  The red light turns off only
when the corresponding pin control is cleared (or powered to D3).

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=64401


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