d2lte: update bluetooth tethering services

Mostly taken from hammerhead

kangallthethings

Change-Id: If2d221e88256c8ccb8454da908954a28a4afe95a
d2lte: d2dcm is not consolidated yet

Change-Id: I1057003c932d93d9b3d745fef4d605c6a0bde637
Merge "d2lte: update bluetooth tethering services" into kk
Merge "d2lte: d2dcm is not consolidated yet" into kk