commit 758393951233d1b2520cf4cefd33ec4288a3880a
  Author: Dave Airlie <airlied@redhat.com>
  Date:   Wed Sep 12 11:09:40 2018 +1000

    xkb: fix what looks to be a copy-paste error with first vs firstMM

    Pointed out by coverity.
Signed-off-by: Dave Airlie <airlied@redhat.com>