GitLab

Adding the original kiss_fft.h/.c files which have initially been excluded
when RNNoise was added to 3pp.

Bug: webrtc:9076
Change-Id: I488dafe9bcfab91cdba04e61a57dad4510699aab
Reviewed-on: https://chromium-review.googlesource.com/980994Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: Ale Bzk <alessiob@chromium.org>
Cr-Commit-Position: refs/heads/master@{#546780}