Sensors: Add property for storing sensor init log

ash_logger is to enhance debug mechanism when sensor init.
To enable this debug mechanism, set persist.vendor.debug.ash.logger 1
and persist.vendor.debug.ash.logger.time to proper time.
Sensor init log will be in /data/vendor/sensor/log/.

Bug: 143451200
Test: Build and flash vendor image. Check ash_logger can work.

Change-Id: Ief84720b708e4659fbad48b82ca5d8c0b6c8bc66
Signed-off-by: Rick Chen <rickctchen@google.com>
Signed-off-by: emilchung <emilchung@google.com>
2 files changed