docs/features: mark some r600 extensions supported

These just looked to be missed when this file was updated.

Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/docs/features.txt b/docs/features.txt
index 633d259..25a0e75 100644
--- a/docs/features.txt
+++ b/docs/features.txt
@@ -225,7 +225,7 @@
 
   GL_ARB_gl_spirv                                       in progress (Nicolai Hähnle, Ian Romanick)
   GL_ARB_indirect_parameters                            DONE (i965/gen7+, nvc0, radeonsi)
-  GL_ARB_pipeline_statistics_query                      DONE (i965, nvc0, radeonsi, llvmpipe, softpipe, swr)
+  GL_ARB_pipeline_statistics_query                      DONE (i965, nvc0, r600, radeonsi, llvmpipe, softpipe, swr)
   GL_ARB_polygon_offset_clamp                           DONE (freedreno, i965, nv50, nvc0, r600, radeonsi, llvmpipe, swr)
   GL_ARB_shader_atomic_counter_ops                      DONE (freedreno/a5xx, i965/gen7+, nvc0, r600, radeonsi, softpipe)
   GL_ARB_shader_draw_parameters                         DONE (i965, nvc0, radeonsi)
@@ -306,7 +306,7 @@
   GL_ARB_seamless_cubemap_per_texture                   DONE (i965, nvc0, radeonsi, r600, softpipe, swr)
   GL_ARB_shader_ballot                                  DONE (i965/gen8+, nvc0, radeonsi)
   GL_ARB_shader_clock                                   DONE (i965/gen7+, nv50, nvc0, radeonsi)
-  GL_ARB_shader_stencil_export                          DONE (i965/gen9+, radeonsi, softpipe, llvmpipe, swr)
+  GL_ARB_shader_stencil_export                          DONE (i965/gen9+, r600, radeonsi, softpipe, llvmpipe, swr)
   GL_ARB_shader_viewport_layer_array                    DONE (i965/gen6+, nvc0, radeonsi)
   GL_ARB_sparse_buffer                                  DONE (radeonsi/CIK+)
   GL_ARB_sparse_texture                                 not started