Update mobilenet_v1 embedding extractor to GA version and missing benchmark references on Rp3. Tested=QA test on rp3b, rp3b+, devboard and gLinux. Change-Id: Ieaf9e7241e5618149b8fb501ea33f57e0e92ad18 (cherry picked from commit 5bcc4bfed3d9cb26fc9aefdc6bebd08d13d9e3e8)