Add log to find issue with missing hwservicemanager easier

Without a log, the fail case for an upgrading device that still requires
HIDL services can be very hard to determine. This warning log will help
determine when this is the case.

Test: launch_cvd without hwservicemanager
Bug: 275622588
Change-Id: I4237939e362962d2a426a2dfa7645dd585ebdc82
1 file changed