Fix include path for system/bt am: 493629ecd0

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/qcom/sdm845/bt/+/16202328

Change-Id: I6e01da05f43c9199acc0007b79827d3067a06b65
tree: 03a55c2f5edd301106d53bd97d9e42e66c9d2673
  1. libbt-vendor/
  2. Android.mk
  3. CleanSpec.mk
  4. METADATA