[binutils-gdb] Define enum out of the scope of struct

[sergiodj+buildbot@redhat.com]

*** TEST RESULTS FOR COMMIT 6c1c9a8bbd2aa3fbc627525b452e7dbbaf40efc5 ***

Author: Yao Qi <yao.qi@linaro.org>
Branch: master
Commit: 6c1c9a8bbd2aa3fbc627525b452e7dbbaf40efc5

Define enum out of the scope of struct

This patch moves the enum definition out of the scope of struct, and
fixes the following error.

gdb/gdbserver/linux-aarch64-low.c:681:18: error: 'OPERAND_REGISTER' was not declared in this scope
   operand.type = OPERAND_REGISTER;
                  ^
gdb/gdbserver:

2015-11-19  Yao Qi  <yao.qi@linaro.org>

	* linux-aarch64-low.c (enum aarch64_operand_type): New.
	(struct aarch64_operand): Move enum out.