Added hevc_enc_fuzzer am: cce1d52e72 am: 4b3faa0805 am: e3130bcc9a am: 77a006c24b

Original change: https://android-review.googlesource.com/c/platform/external/libhevc/+/1470445

Change-Id: Ica33afff1aee32b247cf14c9c08f7124a3b570ab