1 Add context call to get location qwes feature status directly.
2 Add data item to dispatch location qwes feature status.
3 EngineHub uses context call to get location qwes feature status.
4 xtwifi uses data item registration to get location qwes feature
status.
Change-Id: I489b7fadf2b06a4517ac4b362b6ff4d204f94080
CRs-Fixed: 3435284
1: Need to check the validity of elapased real time before
marking it as valid
2: Increase the allowed time between two get boot time call
from 10 micro seconds to 2 milli-seconds
Change-Id: If2f7ddb23ce72cb52f294ff44353f5c9a9421a9c
CRs-fixed: 3281559
