gdb: migrate arm to new gdbarch_pseudo_register_write

Make arm use the new gdbarch_pseudo_register_write.  This fixes writing
pseudo registers to non-current frames for that architecture.

Change-Id: Icb2a649ab6394817844230e9e94c3d0564d2f765
Reviewed-By: John Baldwin <jhb@FreeBSD.org>
Approved-by: Luis Machado <luis.machado@arm.com>
1 file changed