Add support for debug card critical sensors

List of critical sensors read from json file cri_sensors.json
and its name along with current values will be displayed on
debug card screen.

Tested: verified with lcd debug card screen.

Change-Id: I1c7968b1d57efa9bf5e4cf8c7396fbeecbfbfd3a
Signed-off-by: Vijay Khemka <vijaykhemka@fb.com>
4 files changed