VIA has a strange chipset, it has root port under a bridge. Disable ASPM
for such strange chipset.

Cc: stable@kernel.org
Tested-by: NWolfgang Denk <wd@denx.de>
Signed-off-by: NShaohua Li <shaohua.li@intel.com>
Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>