commit c10c8f7c upstream.

Don't update display bandwidth on headless asics.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=99387Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>