ALSA: hda: Assign boolean values to a bool variable

Fix the following coccicheck warnings:

./sound/pci/hda/hda_intel.c:2309:3-23: WARNING: Assignment of
0/1 to bool variable.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Zhong <abaci-bugfix@linux.alibaba.com>
Link: https://lore.kernel.org/r/1611559047-106928-1-git-send-email-abaci-bugfix@linux.alibaba.com


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