Ignore system include dirs for bindgen am: ebcb4d40ed

Original change: https://android-review.googlesource.com/c/platform/bootable/libbootloader/+/2982906

Change-Id: I5f17e60980b2d47d81ea793e0949c54b894feb03
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
tree: 89d647feaae3ee3f750094373fd327b4ab5d6069
  1. gbl/
  2. libxbc/
  3. vts/
  4. .gitignore
  5. BUILD
  6. OWNERS