audio: update speaker firmware and tuning

Tuning changes:
- Tuning for f0 limit samples for both top and bottom speakers
- HPF is now cutoff @ 120Hz (used to be 150Hz) for both top and bottom speakers

Firmware changes:
- Upgrade to v6.47 firmware for protection, cal, and diag firmware

Bug: 181874512
Test: manual audio tests

Signed-off-by: juyuchen <juyuchen@google.com>
Change-Id: I2ed80d2397a2f0fde4a8591e0986e3a3abf8e1b0
9 files changed