This fixes the build after:
commit 224cf2906a
Author: Dave Airlie <airlied@redhat.com>
Date: Mon Apr 17 13:01:52 2017 +1000
radv/ac: add initial pre-pass for shader info gathering
Signed-off-by: Mike Lothian <mike@fireburn.co.uk>
Signed-off-by: Dave Airlie <airlied@redhat.com>