x86-64: Display eiz for address with the addr32 prefix

x86-64: Display eiz for address with the addr32 prefix

In 64-bit mode, display eiz for address with the addr32 prefix and without
base nor index registers.  For

	mov -0xccddef(,%eiz,), %rax

disassembler now displays:

	67 48 8b 04 25 11 22 33 ff 	mov -0xccddef(,%eiz,1),%rax

instead of

	67 48 8b 04 25 11 22 33 ff 	addr32 mov 0xffffffffff332211,%rax

gas/

	* testsuite/gas/i386/evex-no-scale-64.d: Updated.
	* testsuite/gas/i386/x86-64-addr32-intel.d: Likewise.
	* testsuite/gas/i386/x86-64-addr32.d: Likewise.
	* testsuite/gas/i386/ilp32/x86-64-addr32-intel.d: Likewise.
	* testsuite/gas/i386/ilp32/x86-64-addr32.d: Likewise.
	* testsuite/gas/i386/x86-64-addr32.s: Add %eiz tests.

opcodes/

	* i386-dis.c (OP_E_memory): In 64-bit mode, display eiz for
	address with the addr32 prefix and without base nor index
	registers.