Merge remote-tracking branch 'quic/dev/msm-4.14.c12-display' into msm-4.14.c12

* quic/dev/msm-4.14.c12-display:
  disp: msm: avoid deadlock by prepending connection_mutex

Change-Id: I3668938b49fdbf5d42477e07448dbdda9770f902
Signed-off-by: ckosuru <kosuru@codeaurora.org>