Add speaker layout validation to VtsHalAudioCoreModuleTargetTest.

This CL adds validation to the VtsHalAudioCoreModuleTargetTest to ensure that the speaker layout is not null and either none or layoutMask.  This is a new required field for the audio HAL.

Bug: 337522902
Test: m

Change-Id: I59fc58b32f0ceb09a58271e5ea71c8b69fa2bfc3