HDMICEC: 11.1.1-5 Test TV response when displaying internal source

Test to check that device broadcasts an <Active Source> message when
changing to an internal source from previously displaying an external
source.

Bug: 173468440
Test: atest cect_11_1_1_5_DutBroadcastsActiveSourceWhenChangingToInternal

Change-Id: I48e56309a763bfa1099cbb8ca545b203ed26ce8f
1 file changed