mesa/multisample: Check sample count using the new driver hook
mesa/multisample: Check sample count using the new driver hook

Use QueryInternalFormat instead of QuerySamplesForFormat to obtain the
highest supported sample. QuerySamplesForFormat is to be removed.

Reviewed-by: Dave Airlie <f2295d84e358395675bc8031be58672073ae065e@redhat.com>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler