[binutils-gdb] Add native target for FreeBSD/aarch64.

[sergiodj+buildbot@sergiodj.net]

*** TEST RESULTS FOR COMMIT 351787dd4cb8439c0b49472648dd97ebedb5f575 ***

Author: John Baldwin <jhb@FreeBSD.org>
Branch: master
Commit: 351787dd4cb8439c0b49472648dd97ebedb5f575

Add native target for FreeBSD/aarch64.

gdb/ChangeLog:

	* Makefile.in (ALLDEPFILES): Add mips-fbsd-nat.c.
	* NEWS: Mention new FreeBSD/mips native configuration.
	* configure.host: Add aarch64*-*-freebsd*.
	* configure.nat: Likewise.
	* aarch64-fbsd-nat.c: New file.