GL3.txt: update softpipe ARB_gpu_shader5 status

texture gather and it already supported the new instructions.

Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/docs/GL3.txt b/docs/GL3.txt
index c700930..9d56ee5 100644
--- a/docs/GL3.txt
+++ b/docs/GL3.txt
@@ -102,8 +102,8 @@
   - Dynamically uniform UBO array indices              DONE (r600)
   - Implicit signed -> unsigned conversions            DONE
   - Fused multiply-add                                 DONE ()
-  - Packing/bitfield/conversion functions              DONE (r600, radeonsi)
-  - Enhanced textureGather                             DONE (r600, radeonsi)
+  - Packing/bitfield/conversion functions              DONE (r600, radeonsi, softpipe)
+  - Enhanced textureGather                             DONE (r600, radeonsi, softpipe)
   - Geometry shader instancing                         DONE (r600)
   - Geometry shader multiple streams                   DONE ()
   - Enhanced per-sample shading                        DONE (r600, radeonsi)
@@ -115,7 +115,7 @@
   GL_ARB_tessellation_shader                           started (Chris, Ilia)
   GL_ARB_texture_buffer_object_rgb32                   DONE (i965, nvc0, r600, radeonsi, llvmpipe, softpipe)
   GL_ARB_texture_cube_map_array                        DONE (i965, nv50, nvc0, r600, radeonsi, llvmpipe, softpipe)
-  GL_ARB_texture_gather                                DONE (i965, nv50, nvc0, r600, radeonsi, llvmpipe)
+  GL_ARB_texture_gather                                DONE (i965, nv50, nvc0, r600, radeonsi, llvmpipe, softpipe)
   GL_ARB_texture_query_lod                             DONE (i965, nv50, nvc0, r600, radeonsi)
   GL_ARB_transform_feedback2                           DONE (i965, nv50, nvc0, r600, radeonsi, llvmpipe, softpipe)
   GL_ARB_transform_feedback3                           DONE (i965, nv50, nvc0, r600, radeonsi, llvmpipe, softpipe)