i965: Use proper TCS barrier ID bits for Ivybridge/Baytrail.
i965: Use proper TCS barrier ID bits for Ivybridge/Baytrail.

Gen7 uses bits 15:12 while Gen7+ uses bits 16:13.

Signed-off-by: Kenneth Graunke <bd2562f754ec92342f93f61c25d731e290a2ffa8@whitecape.org>
Reviewed-by: Edward O'Callaghan <117173807d5a49976a891944633465c0daea7f98@alterapraxis.com>
Reviewed-by: Jordan Justen <a79006884ba9cf5f4f7fcbb92a15b208780d8c97@intel.com>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler