RPA: RPA offload to BT controller

This patch is to implement offloading RPA rotation to BT controller
if the controller supports RPA rotation in a random period.

Bug: 378398874
Bug: 378143579
Test: mm packages/modules/Bluetooth
Test: test with vendor test firmware b/331772841
Flag: com.android.bluetooth.flags.rpa_offload_to_bt_controller
Change-Id: Iabfb97a0e67ded74d3fb606e36847dcdab785120