ALSA: hda - Enable headphone jack detect on old Fujitsu laptops

According to the bug report, FSC Amilo laptops with ALC880 can detect
the headphone jack but currently the driver disables it.  It's partly
intentionally, as non-working jack detect was reported in the past.
Let's enable now.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=102501


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