Camera: Try adding a passthrough legacy service

Listing by interface on passthrough only devices doesn't
return the legacy implementation that might be present.
For this case try to connect to the legacy provider and
check whether such implementation does in fact exist.

Bug: 62835396
Test: vts-tradefed run commandAndExit vts --skip-all-system-status-check
--skip-preconditions --module VtsHalCameraProviderV2_4Target -l INFO

Change-Id: Ifdc1b15392f5418fd0d949953bb6bdb1f3612ee8