audio: Use auto-generated MicrophoneInfoFw class

Replace use of manually written MicrophoneInfo class
with MicrophoneInfoFw which is generated automatically
from the AIDL definition.

Rename MicrophoneInfoData AIDL to MicrophoneInfoFw for
consistency with other framework-side AIDL types.
MicrophoneInfoFw is defined using stable shared data
types.

Bug: 263964254
Test: atest audio_aidl_conversion_tests
Change-Id: I93e4fe08fc294350c9b06f2959f84b24f31f6881
Merged-In: I93e4fe08fc294350c9b06f2959f84b24f31f6881