Move Bluetooth to androidx.

Bug: 76692459
Test: make -j Bluetooth
Change-Id: Ieefae6fa080b345f69215a3a983d08e522ed4bcd
Merged-In: Ieefae6fa080b345f69215a3a983d08e522ed4bcd
(cherry picked from commit 63a25890a9eeefd8c2c598f217677c449f896bfe)
24 files changed