Neon: Intrinsics impl. of h2v1 & h2v2 fancy upsamp The previous AArch32 GAS implementation of h2v1 fancy upsampling has been removed, since the intrinsics implementation provides the same or better performance. There was no previous GAS implementation of h2v2 fancy upsampling, and there was no previous AArch64 GAS implementation of h2v1 fancy upsampling.