gallium: use gl shader types as the basis for the gallium ones

This should enable a rename transistion.

Trace needs to swap over to a non-generated version, but that should be fine.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17747>

src/gallium/include/pipe/p_defines.h

@@ -30,6 +30,8 @@
 
 #include "p_compiler.h"
 
+#include "compiler/shader_enums.h"
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -546,19 +548,6 @@ enum pipe_resource_usage {
    PIPE_USAGE_STAGING,        /* fast CPU access */
 };
 
-/**
- * Shaders
- */
-enum pipe_shader_type {
-   PIPE_SHADER_VERTEX,
-   PIPE_SHADER_TESS_CTRL,
-   PIPE_SHADER_TESS_EVAL,
-   PIPE_SHADER_GEOMETRY,
-   PIPE_SHADER_FRAGMENT,
-   PIPE_SHADER_COMPUTE,
-   PIPE_SHADER_TYPES,
-};
-
 /**
  * Primitive types:
  */