svn commit: r334052 - head/sys/arm64/arm64

[Andrew Turner]

> On 22 May 2018, at 16:52, Andrew Turner <andrew at FreeBSD.org> wrote:
> 
> Author: andrew
> Date: Tue May 22 15:52:11 2018
> New Revision: 334052
> URL: https://svnweb.freebsd.org/changeset/base/334052
> 
> Log:
>  Revert r334035 for now. It breaks the boot on some boards as er expect to
>  be able to read UEFI RuntimeData memory via the DMAP region.

Reported by: tuexen

Andrew