bt-opensource: Add product & board makefiles

Add ANT/BT/FM/WIPOWER product & board makefiles.

CRs-fixed: 2395487
Change-Id: Id68402c318cda1d7cc319760e33d0819f40cc56c
2 files changed
tree: a8bf8b734ed0bc120c03089ea4e611ab3a902843
  1. bt-commonsys-intf-board.mk
  2. bt-system-opensource-product.mk