Set BT to proper scan mode.

- set bt device to connectable and discoverable when in bt setting page.
- set it back to connectable only when leaving the page.

Bug: 63805251

Test: build and flashed
Change-Id: I86bf2a0f45b309d3b0d7763fd714d3aca78f89df
(cherry picked from commit 25d325e0e010736398cb69ed00d37ad4ebf1645b)
1 file changed
tree: 74677ad9c55e1248d1d587076bcbcd532ef25d51
  1. res/
  2. src/
  3. tests/
  4. Android.mk
  5. AndroidManifest.xml