PowerPC: Add support for RFC02680 - PQC Acceleration Instructions opcodes/ * ppc-opc.c (powerpc_opcodes): Add xvadduwm, xvadduhm, xvsubuwm, xvsubuhm, xvmuluwm, xvmuluhm, xvmulhsw, xvmulhsh, xvmulhuw, xvmulhuh. gas/ * testsuite/gas/ppc/future.s: New test. * testsuite/gas/ppc/future.d: Likewise.