ash: Add GetECLidAngleDriverStatus() in ash/AccelerometerReader

This commit extracts ECLidAngleDriverSupported information from
AccelerometerUpdate and adds a public function
GetECLidAngleDriverStatus() in AccelerometerReader to provide this
information because it doesn't change.
It also adds SetECLidAngleDriverStatusForTesting() to fake the status
for unittests.

BUG=b:171446270
TEST=unit tests, and run on jacuzzi & hatch

Change-Id: I80cb66e6caf77f9d193b92e9a675d649576fcc87
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2491462
Commit-Queue: Cheng-Hao Yang <[email protected]>
Reviewed-by: Mitsuru Oshima <[email protected]>
Reviewed-by: Xiaoqian Dai <[email protected]>
Reviewed-by: Raphael Kubo da Costa <[email protected]>
Cr-Commit-Position: refs/heads/master@{#822040}
14 files changed