Add license_note am: e6aed768e7 am: f00dfa3612 am: 359510f778 am: 519b19e8f0 am: bcd9799657

Original change: https://android-review.googlesource.com/c/platform/external/fft2d/+/2011746

Change-Id: Icdf6fb78fae30785bab20b428215000f82dabec8