The extension is already exposed, this simply marks it as done.

Signed-off-by: Lars Hamre <chemecse@gmail.com>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
diff --git a/docs/GL3.txt b/docs/GL3.txt
index ce34869..1335397 100644
--- a/docs/GL3.txt
+++ b/docs/GL3.txt
@@ -171,7 +171,7 @@
   GL_ARB_copy_image                                     DONE (i965, nv50, r600, softpipe, llvmpipe)
   GL_KHR_debug                                          DONE (all drivers)
   GL_ARB_explicit_uniform_location                      DONE (all drivers that support GLSL)
-  GL_ARB_fragment_layer_viewport                        DONE (i965, nv50, r600, llvmpipe)
+  GL_ARB_fragment_layer_viewport                        DONE (i965, nv50, r600, llvmpipe, softpipe)
   GL_ARB_framebuffer_no_attachments                     DONE (i965, r600, softpipe)
   GL_ARB_internalformat_query2                          DONE (all drivers)
   GL_ARB_invalidate_subdata                             DONE (all drivers)