gk110: add in forgotten code for gk110 isa
Signed-off-by:Ilia Mirkin <imirkin@alum.mit.edu> Reviewed-by:
Ben Skeggs <bskeggs@redhat.com> Cc: "10.2" <mesa-stable@lists.freedesktop.org> Conflicts: src/gallium/drivers/nouveau/nvc0/nvc0_surface.c (cherry picked from commit b9ec766b)