Fix misdetection of the sound chip on PC98 systems. The submitter doesn't believe that there are PC98 systems with an OPTi chip.
Fix misdetection of the sound chip on PC98 systems. The submitter doesn't
believe that there are PC98 systems with an OPTi chip.

I don't know enough about this special PC architecture to be sure about
this, so let's find out by letting people with such a system complain in
case this commit breaks the sound system for them. It's easy to revert
then.

PR:		45673
Submitted by:	Watanabe Kazuhiro <CQG00620@nifty.ne.jp>

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