[Raster] Add NEON vmaxq/vminq intrinsics for lowp::max_intr and lowp::min_intr Add NEON vmaxq/vminq intrinsics for lowp::max_intr and lowp::min_intr in SkRasterPipeline_opts.h. Bug: b/387633181 Change-Id: I2735a25da69c0143721f8e5b62845449d8c08608 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/1373656 Reviewed-by: Florin Malita <fmalita@google.com> Commit-Queue: Alexis Cruz-Ayala <alexisdavidc@google.com>