Wolf: haswell: Add small delay before Flex Ratio reboot

cherry picked from commit fee36012a575f84032c7f567a5a2107a031b0534

BUG=chrome-os-partner:41609
TEST="emerge-wolf coreboot"

Change-Id: I4acb4e7282b26383ce164f1f6866adee3393945c
Signed-off-by: Mohammed Habibulla <moch@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/289680
Commit-Queue: Mohammed Habibulla <moch@google.com>
Tested-by: Mohammed Habibulla <moch@google.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
3 files changed