Reorganize device tree - nothing changed

Change-Id: I77a9c4e43d04e41cf02a0218dcd7b1dce480d177
Reorganize device tree - delete unneeded files

Reorganize device_mecha.mk

Change-Id: I68d3712405326d7691a90f6e234708ea3761b4c5
Use firmware from hardware tree instead of device tree

Change-Id: Ibc7eeb30540189aaa9104dade08631b7601491fa
Add product package libbt-vendor for qcom bluetooth

Change-Id: Iba1ed9571584255402bde07e8652116e07007278