FM: Keep track of scanned frequencies in service

By keeping track of scanned frequencies in the service, this allows
us to fetch it when the activity is resumed and not rely on having
active callbacks.

Change-Id: Idea9cab3e5fd2a789333c3f126416e0102613aa8
3 files changed
tree: 450b10679af38eb1a86fff8b5df7d8a4d6157dd2
  1. fm_hci/
  2. fmapp2/
  3. helium/
  4. jni/
  5. qcom/
  6. .gitupstream