mesa: Move glheader.h from mesa/main/glheader.h to util/glheader.h

So it's can be accessed in broader places

Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Reviewed-by: Jesse Natalie <jenatali@microsoft.com>
Acked-by: Brian Paul brianp@vmware.com
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19472>

src/compiler/glsl/gl_nir_link_varyings.h

@@ -31,7 +31,7 @@
  */
 
 
-#include "main/glheader.h"
+#include "util/glheader.h"
 #include "program/prog_parameter.h"
 #include "util/bitset.h"
 

src/compiler/glsl/gl_nir_linker.h

@@ -27,7 +27,7 @@
 #include <stdbool.h>
 
 #include "nir.h"
-#include "main/glheader.h"
+#include "util/glheader.h"
 #include "main/menums.h"
 
 #ifdef __cplusplus