intel/clc: compile fix

Fixes: c15bf88f01 ("intel: Add a little OpenCL C compiler binary")
Reviewed-by: Jason Ekstrand <jason.ekstrand@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15486>

src/intel/compiler/intel_clc.c

@@ -109,7 +109,7 @@ print_u32_data(FILE *fp, const char *prefix, const char *arr_name,
    fprintf(fp, "\n};\n");
 }
 
-const char *
+static const char *
 reloc_type_str(enum brw_shader_reloc_type type)
 {
    switch (type) {