Export headers in dt-bindings am: 43bfdeb54a am: e82455bef2 am: 72e1771677 am: f3f6a2b61a

Original change: https://android-review.googlesource.com/c/platform/external/arm-trusted-firmware/+/2456228

Change-Id: I6a93ddf971b7b94d8d015147de348f2565b1d3c7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>