jmsg: change message id for 'start_motor' and 'stop_motor'
jmsg: change message id for 'start_motor' and 'stop_motor'

Signed-off-by: Yi Qingliang <36380975b124e1c123f6f25e4b18a8f5e5597b95@gmail.com>

walkthetalk/libem,walkthetalk/libem,walkthetalk/libem