mesa/nir: Add some perfetto traces

Signed-off-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22646>

src/compiler/glsl/gl_nir_link_varyings.c

@@ -33,6 +33,7 @@
 #include "main/mtypes.h"
 #include "util/hash_table.h"
 #include "util/u_math.h"
+#include "util/perf/cpu_trace.h"
 
 #include "nir.h"
 #include "nir_builder.h"
@@ -3154,6 +3155,8 @@ gl_nir_link_varyings(const struct gl_constants *consts,
 
    unsigned first, last;
 
+   MESA_TRACE_FUNC();
+
    first = MESA_SHADER_STAGES;
    last = 0;