Revert "d2: update bluetooth to latest d2 source drop (i535's ML1)"

This reverts commit 6945470df881965c5fbbaa0230045900576d394f.

Change-Id: I693318a24c7a4944b6251442e7f6c1c1e64262d7
bluesleep_bcm: bring in some changes from ML1

* additional handling in hsuart_power for a null uport
* handle abnormal bluesleep stop

Change-Id: I0beb4fd13c7f1c5cec8cce2d280a0ead3826e838