[AIE2] Rewrite G_CONCAT_VECTOR selection as table-gen#48

ValentijnvdBeek merged 3 commits intoaie-publicXilinx/llvm-aie:aie-publicfrom

vvandebe.concat.vector.tablegenXilinx/llvm-aie:vvandebe.concat.vector.tablegenCopy head branch name to clipboard