superio: ite8772f: Exit extemp busy state

It causes fan top speed due to this bug + our board-specific workaround,
and causes invalid temperature sensor readings.

Therefore, re-configure the register "External Temperature Sensor Host
Control Register" to terminate processes when this issue happens.

BUG=chromium:402204
TEST=ran suspend_stress_test 500 times

Change-Id: I6e71b6a46a31b00e541c304f1ed58c1678c1d42e
Signed-off-by: Ryan Lin <ryan.lin@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/219445
Reviewed-by: Shawn Nematbakhsh <shawnn@chromium.org>
2 files changed