st/va: Baseline profile is not supported
st/va: Baseline profile is not supported

Constrained baseline profile is supported, so use that instead.  This
matches what the encoder already does (constraint_set1_flag is always
set in the output bitstream).

Reviewed-by: Christian König <c7ea837d7a46effe4232b086213468b8b31643bf@amd.com>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler