Fix include path for system/bt am: afc54f7ce4

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/broadcom/libbt/+/16203021

Change-Id: Ie617440a19c51694d2abf732b02634151cd4da5a
tree: fc99c8a7c748fd340dbf671219a6c71e81fd53fa
  1. include/
  2. src/
  3. Android.mk
  4. gen-buildcfg.sh
  5. METADATA
  6. OWNERS
  7. vnd_buildcfg.mk