[FFmpeg-cvslog] swscale/aarch64: use multiply accumulate and shift-right narrow

ffmpeg | branch: master | Sebastian Pop | Mon Dec 9 14:25:01 2019 +| [c3a176ba60e6039066a610ae81747ffb61a6] | committer: Michael Niedermayer swscale/aarch64: use multiply accumulate and shift-right narrow This patch rewrites the innermost loop of ff_yuv2planeX_8_neon to avoid zips

[FFmpeg-cvslog] swscale/aarch64: use multiply accumulate and increase vector factor to 4

ffmpeg | branch: master | Sebastian Pop | Sun Nov 17 14:13:13 2019 -0600| [bd831912712e32b8e78d409bfa7ea7e668ce4b42] | committer: Michael Niedermayer swscale/aarch64: use multiply accumulate and increase vector factor to 4 This patch implements ff_hscale_8_to_15_neon with NEON fused multiply