PowerPC: Add new xxmr and xxlnot extended mnemonics opcodes/ * ppc-opc.c (powerpc_opcodes) <xxmr, xxlnot>: New extended mnemonics. gas/ * testsuite/gas/ppc/vsx.d <xxmr, xxlnot>: Add tests. * testsuite/gas/ppc/vsx.s: Likewise.