Bluetooth: advmon offload MSFT handle controller reset

When the controller is powered off, the registered advertising monitor
is removed from the controller. This patch handles the re-registration
of those monitors when the power is on.

Signed-off-by: Archie Pusaka <apusaka@chromium.org>
Reviewed-by: Miao-chen Chou <mcchou@chromium.org>
Reviewed-by: Yun-Hao Chung <howardchung@google.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>