WPC: fix wrongly removed pre DCS sound board FIRQ #1281

Job	Run time
Version	9s
Build libpinmame-win-x64	2m 28s
Build libpinmame-win-x86	1m 15s
Build libpinmame-win-arm64	2m 11s
Build libpinmame-osx-x64	2m 34s
Build libpinmame-osx-arm64	1m 43s
Build libpinmame-ios-arm64	1m 8s
Build libpinmame-tvos-arm64	1m 40s
Build libpinmame-linux-x64	3m 2s
Build libpinmame-android-arm64-v8a	1m 31s
Build libpinmame-osx	12s
dispatch	3s
	17m 56s

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