ALSA: ymfpci: Fix assignment in if condition

[ Upstream commit e7daaeed

 ]

PCI YMFPCI driver code contains lots of assignments in if condition,
which is a bad coding style that may confuse readers and occasionally
lead to bugs.

This patch is merely for coding-style fixes, no functional changes.

Link: https://lore.kernel.org/r/20210608140540.17885-53-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Stable-dep-of: 6be2e752

 ("ALSA: ymfpci: Fix BUG_ON in probe function")
Signed-off-by: Sasha Levin <sashal@kernel.org>