Fix thermal throttling atoms

Adds a ThermalThrottlingSeverityStateChanged atom to replace
ThermalThrottlingStateChanged. The new atom logs per severity level and
temperature type/name.

Test: print-logs and testdrive while injecting a high temperature via
emul_temp
Bug: 119688911

Change-Id: I2fbcae36eec96bd2c484e0d85ca1617f802a79d9
2 files changed