startop: Add a prebuild trace for camera for prefetching.
Adapt the program to read that prebuild trace.

The trace is collected in a crosshatch device with 3 seconds duration.
This is a temporary change for testing.

Bug: 138755582
Bug: 139831359
Test: none

Change-Id: I4740f154b52606cf845a26e1b5c79fcaebd88bbc
2 files changed