Add field to HapticGenerator scale params

Add new float scale factor field to HapticGenerator audio effect params,
to forward the new field of os::HapticScale wrapper class to the scaling
helpers.

Bug: 356407385
Flag: android.os.vibrator.haptics_scale_v2_enabled
Test: manual
Change-Id: I3245e86c921fe847ca569a02bb7bd2b087d1d555
5 files changed