ALSA: hda - Fix silent headphone output from Toshiba P200

By some reason, Toshiba laptop doesn't like the EAPD turned up for the
headphone pin.  Add a fix up code to force to turn down EAPD for NID
0x15.

Bugzilla: https://bugzilla.novell.com/show_bug.cgi?id=569991



Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>