ALSA: hda - Add dock support for ThinkPad X260

ALSA: hda - Add dock support for ThinkPad X260

Orabug: 25227139

[ Upstream commit 037e119738120c1cdc460c6ae33871c3000531f3 ]

Fixes audio output on a ThinkPad X260, when using Lenovo CES 2013
docking station series (basic, pro, ultra).

Signed-off-by: Conrad Kostecki <ck+linuxkernel@bl4ckb0x.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
(cherry picked from commit 2519c9fc644c0fc14c54518bab9440765e0ea99a)

Conflicts:

	sound/pci/hda/patch_realtek.c

Signed-off-by: Dhaval Giani <dhaval.giani@oracle.com>