skpbench: add debug prints for thermal trip points

Prints thermal trip points that have been exceeded when a
HardwareException is raised, and verbosity is set to debug. This can
help us correlate thermal trip points with throttling and detect
future throttling before it occurs.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2408893002

Review-Url: https://codereview.chromium.org/2408893002
3 files changed