[AArch64][SVE] Add remaining SVE2 intrinsics for uniform DSP operations

Summary:
Implements the following intrinsics:

 - @llvm.aarch64.sve.[s|u]qadd
 - @llvm.aarch64.sve.[s|u]qsub
 - @llvm.aarch64.sve.suqadd
 - @llvm.aarch64.sve.usqadd
 - @llvm.aarch64.sve.[s|u]qsubr
 - @llvm.aarch64.sve.[s|u]rshl
 - @llvm.aarch64.sve.[s|u]qshl
 - @llvm.aarch64.sve.[s|u]qrshl
 - @llvm.aarch64.sve.[s|u]rshr
 - @llvm.aarch64.sve.sqshlu
 - @llvm.aarch64.sve.sri
 - @llvm.aarch64.sve.sli
 - @llvm.aarch64.sve.[s|u]sra
 - @llvm.aarch64.sve.[s|u]rsra
 - @llvm.aarch64.sve.[s|u]aba

Reviewers: efriedma, sdesmalen, dancgr, cameron.mcinally, c-rhodes, rengolin

Reviewed By: sdesmalen

Subscribers: tschuett, kristof.beyls, hiraditya, rkruppe, psnobl, cfe-commits, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D73551