Internally link stack/hid/hidh_conn::

hidh_try_repage
hidh_process_repage_timer_timeout

Towards readable code

Bug: 163134718
Tag: #refactor
Test: act.py -tc BleCocTest
Test: ble paired 2 phones
Test: classic paired Bose SoundLink

Change-Id: Ia6e0e29fc7a466d5441b991ce38211f5378dfcb9