Revert "ISSUE 6849488 Bluedroid stack, remove system/bluetooth."

This reverts commit c2f59d87d85e4c7ec9a7f899dd4f55a36b3627f5.
Revert "ueventd.rc: Add /dev/uhid for bluedroid"

This reverts commit 3ad289dca66ce950f417280b2c071a8dd1975598.

Conflicts:
	rootdir/ueventd.rc
Revert "bluetooth: bring up with bluedroid stack"

This reverts commit 81b1996827941070851fbbae04fcef24f371843b.
Revert "remove dbus and bluetoothd, create bluedroid data dirs"

This reverts commit 4c3ac516ff391d9fc93ec997ce254f83af722a1a.

Conflicts:
	rootdir/init.rc
shell: make shell user root

Change-Id: Icb556b16e59bf1d1f68cf5fd9a144b862207cedd
bluetooth: enable bluetoothd debug