Adding priority flags while registering NI
handling callback and AGPS handling callback.
To ensure that both NI and AGPS are always
handled by our stack instead of Android
Framework stack.
CRs-Fixed: 2059476
Change-Id: I585328491a7f5d9099287924a03d7710f4e5fda9
GNSS HAL needs to check the return value of HIDL
Callbacks to avoid crashing when things go wrong.
Bug: 37987256
Change-Id: I4a5e33f7f4d85c887bc91fa71336a78151c3ce3b
CRs-fixed: 2044206