glsl: stop allocating memory for SSBOs and builtins
glsl: stop allocating memory for SSBOs and builtins

This just stops counting and assigning a storage location for
these uniforms, the count is only used to create the uniform storage.

These uniform types don't use this storage.

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

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler