HDMI: Disable SAM only if AVR doesn't ACK <UCP> message

There is a small chance that sending a message might result in failure code 3 (other) for different reasons (e.g. driver is busy). We should disable SAM only if the AVR doesn't acknowledge the CEC message. This is similar to aosp/2619391.

Bug: 326821366
Change-Id: Iadaa65f91a2338a8cc2653fd9af6f17cb80ae727
Test: manual
1 file changed