Introduce wait time between keyevents

Test: cts-tf > run cts -m CtsHdmiCecHostTestCases -t android.hdmicec.cts.playback.HdmiCecTvPowerToggleTest
Fixes: 181850385
Change-Id: I8ecd815368f51e9bf82d508c19c4ec481195b8ef
1 file changed