etnaviv: Fake occlusion query capability

This enables the PIPE_CAP_OCCLUSION_QUERY capability without adding an
occlusion query type.

This is necessary to get Mesa to report desktop GL 2.0 support (to run
exciting things such as ioq3's OpenGL 2 renderer), and should be valid
because exposing the capability does not guarantee that any
counters are actually implemented.

Signed-off-by: Wladimir J. van der Laan <laanwj@gmail.com>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
diff --git a/src/gallium/drivers/etnaviv/etnaviv_screen.c b/src/gallium/drivers/etnaviv/etnaviv_screen.c
index fa76226..bf66168 100644
--- a/src/gallium/drivers/etnaviv/etnaviv_screen.c
+++ b/src/gallium/drivers/etnaviv/etnaviv_screen.c
@@ -292,9 +292,10 @@
       return 1;
 
    /* Timer queries. */
+   case PIPE_CAP_OCCLUSION_QUERY: /* Not implemented - fake it for OpenGL2 */
+      return 1;
+
    case PIPE_CAP_QUERY_TIME_ELAPSED:
-   case PIPE_CAP_OCCLUSION_QUERY:
-      return 0;
    case PIPE_CAP_QUERY_TIMESTAMP:
       return 1;
    case PIPE_CAP_QUERY_PIPELINE_STATISTICS: