Rewrite aosp_crosshatch_car.mk to inherit aosp_product.mk am: 59700ae71a

Change-Id: I64c1fca0e6c7a24369950c97ed5ae8c83e9b8551
tree: e45b787f3e223b14fd5b08792222240f0521cf57
  1. crosshatch_car/
  2. AndroidProducts.mk
  3. OWNERS