Make direct calls to Neon variance paths in Neon subpel variance Now that we have Neon DotProd paths for subpel variance as well as variance, we no longer need to have an indirect call to the variance function in Armv8.0 Neon subpel variance paths. Make a direct call to the Neon variance path in these Neon subpel functions. This is a port from SVT-AV1: https://gitlab.com/AOMediaCodec/SVT-AV1/-/merge_requests/2608 Originally authored by: Jonathan Wright <[email protected]> Change-Id: If94c9af098356ec857255496a435b7a4cbb3c522