Complete 2.1 gnss default implementation to pass all VTS tests

Test: atest VtsHalGnssV2_1TargetTest && atest VtsHalGnssV2_0TargetTest && atest VtsHalGnssV1_1TargetTest && atest VtsHalGnssV1_0TargetTest
Bug: 146216289
Change-Id: Idfd80f70b67359dcbf1dc033b9b4218aff0c869c
5 files changed