Make sure the user is aware he can lock the device though unlock is not
possible without access to MDM-AP.
Change-Id: I92676530e95d19489c6739748a99c2895849f90f
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: http://openocd.zylin.com/4403
Tested-by: jenkins