compiler/glsl: call util_cpu_detect from glsl_type_singleton_init_or_ref

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Closes: #4393
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9457>

src/compiler/nir/tests/negative_equal_tests.cpp

@@ -36,7 +36,6 @@ protected:
    const_value_negative_equal_test()
    {
       glsl_type_singleton_init_or_ref();
-      util_cpu_detect();
 
       memset(c1, 0, sizeof(c1));
       memset(c2, 0, sizeof(c2));
@@ -56,7 +55,6 @@ protected:
    alu_srcs_negative_equal_test()
    {
       glsl_type_singleton_init_or_ref();
-      util_cpu_detect();
 
       static const nir_shader_compiler_options options = { };
       bld = nir_builder_init_simple_shader(MESA_SHADER_VERTEX, &options,