ALSA: hda/realtek - Add Bass Speaker and fixed dac for bass speaker

[ Upstream commit e79c22695abd3b75a6aecf4ea4b9607e8d82c49c ]

Dell has new platform which has dual speaker connecting.
They want dual speaker which use same dac for output.

Signed-off-by: Kailang Yang <kailang@realtek.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/229c7efa2b474a16b7d8a916cd096b68@realtek.com


Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>