drm/vmwgfx: Don't put resources with invalid id's on lru list

commit 26682480 upstream.

The evict code may try to swap them out causing a BUG in the destroy
function.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Jakob Bornecrantz <jakob@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>