libaudiohal@aidl: Log clarifications

Add a note about useless port IDs in the patch request.

Correct messages about finding the device port in
`setConnectedState`.

Bug: 298175108
Test: atest audiosystem_tests
(cherry picked from https://android-review.googlesource.com/q/commit:02038015acaa3913bf41deb5e7487021ab8ab7c9)
Merged-In: I0f0d476b9684c3e351ce1ab7047f5c2e34ce3c7d
Change-Id: I0f0d476b9684c3e351ce1ab7047f5c2e34ce3c7d