intel/aubinator: Wait to setup decoders until we parse the aub header
intel/aubinator: Wait to setup decoders until we parse the aub header

This requires that a few more state bits become global.

Reviewed-by: Lionel Landwerlin <9463032a5b99ffad10f36631678a833369a311b5@intel.com>
Reviewed-by: Jordan Justen <a79006884ba9cf5f4f7fcbb92a15b208780d8c97@intel.com>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler