Export headers in dt-bindings am: 43bfdeb54a am: e82455bef2 am: 72e1771677 am: f3f6a2b61a am: 138668cae2

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

Change-Id: I619abcca6254a1ab32b1b999c20c99a414a051c8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>