VP8 encoder for ARMv8 by using NEON intrinsics 2

Add vp8_shortwalsh4x4_neon.c
- vp8_short_walsh4x4_neon

Change-Id: Ica5f584be608c9e636f62db14f563757e94be09b
Signed-off-by: James Yu <james.yu@linaro.org>
4 files changed