audio: Require exact implementation version match

Align the behavior of minor version mismatch with the behavior
of major version mismatch. For example, trying to run VTS test
intended for V7.0 on a device with V7.1 yields no results,
similar to what happens when running a V6.0 test on V7.0 device.
This is done to avoid test failures when the device uses
features added by V7.1 in the APM XML config.

Bug: 227150535
Test: atest VtsHalAudioV7_0TargetTest
Test: atest VtsHalAudioV7_1TargetTest
Change-Id: I8ad6595a221f0bc9aedea057f27a75c172954da5