This appears to fix an infrequent resume hang on Ivybridge.
Tested on 2 devices with 15k suspend/resume cycles each
Change-Id: I53618bc7966824413f1720a2be3cbd2550e29473
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/1704
Reviewed-by: Marc Jones <marcj303@gmail.com>
Tested-by: build bot (Jenkins)