PR21303, objdump doesn't show e200z4 insns
    
    	PR 21303
    opcodes/
    	* ppc-dis.c (struct ppc_mopt): Comment.
    	(ppc_opts <e200z4>): Move PPC_OPCODE_VLE from .sticky to .cpu.
    gas/
    	* testsuite/gas/ppc/pr21303.d,
    	* testsuite/gas/ppc/pr21303.s: New test
    	* testsuite/gas/ppc/ppc.exp: Run it.