Support generating a DMAR table and add a few helper routines as well.
Also set up NHLT so that audio works.
Signed-off-by: Simon Glass <sjg@chromium.org>
This driver models the hostbridge as a northbridge. It simply sets up the
graphics BAR. It supports of-platdata.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>