tree da79689a9d21b3c3d30741816ee19cae5b4511e7
parent 5488754da2ca3f50370b0e6c97d5a85a2043a225
author Amy <amyjojo@google.com> 1534543121 -0700
committer shubang <shubang@google.com> 1546908789 -0800

cec: support standby features for tx/rx [1/1]

cherrypick ag/4808863

Bug: 112553298

When press power key on soundbar, CEC type is 5(audio system),
it will send command to tx and rx devices to let them go to standby mode

Test: Tested with a TV
Change-Id: I242fb1028b5ae003e6054fe9b54e10d1f433374c