Keep the millibels precision for lvm EQ gain

Bug: 285632900
Test: atest --test-mapping hardware/interfaces/audio/aidl/vts:presubmit
Change-Id: I1b3f5832a4357327721c45d3a91926e9aab25a04
Merged-In: I1b3f5832a4357327721c45d3a91926e9aab25a04
2 files changed