Work around fix for games trying to change scu mask from slave sh2 when using hle bios. In order to accurately emulate we'll need to emulate SH2 cache and support for strange Slave SH2 behaviour.

git-svn-id: svn+ssh://svn.code.sf.net/p/yabause/code/trunk@3241 d7be59e3-070e-4b9a-85a1-4646befae34d