audio: update waves preset

Change List & Tuning Notes
1. Iteration to mitigate the subjective difference between
   2.5A & 1.8A(BAACL throttle) waves tunings.
2. Speaker-safe mode is updated accordingly.

Bug: 203794965
Test: manual test (b/203794965#comment13)

Signed-off-by: Jasmine Cha <chajasmine@google.com>
Change-Id: I1a1ebd5a3080c7ea93d5592d82d78533d01103cc