Audio AIDL : Add default value to params

Bug: 258124419
Test: atest VtsHalBassBoostTargetTest
Test: atest VtsHalVirtualizerTargetTest
Test: atest VtsHalVisualizerTargetTest
Test: atest VtsHalAECTargetTest
Test: atest VtsHalAGCTargetTest
Test: atest VtsHalNSTargetTest

Change-Id: Iad68cf01f8a27dfe9ba17584f2c3b43f0d586d86
6 files changed