Change total sample count type to 64 bit

We encounter aborts due to globally enabled overflow sanitization.
- Change mTotalSmp to 64 bit to avoid crashes
The behavior of this component is still not well-defined if
ToneGenerator plays for long durations.

Bug: 229549191
Test: Compiles
Change-Id: Idb7c0ae9272ece837663f4ab8ee1be72c0c28857
2 files changed