HDMICEC: Update the checkExceptedOutput method

Updated the checkExpectedOutput method to take an extra argument
fromCecClient, which tells to look for Cec messages coming from
Cec-client or from the DUT.

Bug: 173468440
Test: None
Change-Id: I5cb1e8ff26e6b69c7981336ef6baf5548a7864ee
1 file changed