compiler: Move from nir_scope to mesa_scope

Just moving the enum and performing renames, no behavior change.

Acked-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Acked-by: Yonggang Luo <luoyonggang@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23328>

src/compiler/shader_enums.h

@@ -1376,6 +1376,17 @@ typedef enum
    NUM_TEXTURE_TARGETS
 } gl_texture_index;
 
+/* Ordered from narrower to wider scope. */
+typedef enum {
+   SCOPE_NONE,
+   SCOPE_INVOCATION,
+   SCOPE_SUBGROUP,
+   SCOPE_SHADER_CALL,
+   SCOPE_WORKGROUP,
+   SCOPE_QUEUE_FAMILY,
+   SCOPE_DEVICE,
+} mesa_scope;
+
 #ifdef __cplusplus
 } /* extern "C" */
 #endif