[HAX] Allow per-target dtbTool

 * Revert this when fixed

Change-Id: I97ecb0448ae7bd5859454be290c5dde6248b2859
remove cm- from build and shift to vendor
build: pixel rebrand
build: update product_config.mk
build: update Makefile
build: misc
build: update envsetup.sh
build: update dumpvar.mk
build: update config.mk
build: update buildinfo.sh
vendor: update Makefile
build: update Makefile
build: update makefile
build: derp
support legacy qcom audio variant

Change-Id: I752c2f6380331f6c8f5d4ba427b04e387ecbc604
build: update roomservice.py