gallium: add pipe_context::set_active_query_state for pausing queries

Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
diff --git a/src/gallium/docs/source/context.rst b/src/gallium/docs/source/context.rst
index 904e1ff..3a45f40 100644
--- a/src/gallium/docs/source/context.rst
+++ b/src/gallium/docs/source/context.rst
@@ -330,6 +330,9 @@
 wait for the query to complete, and will optionally write whether the value
 is available instead of the value itself.
 
+``set_active_query_state`` Set whether all current non-driver queries except
+TIME_ELAPSED are active or paused.
+
 The interface currently includes the following types of queries:
 
 ``PIPE_QUERY_OCCLUSION_COUNTER`` counts the number of fragments which