pd: move tDRPHold to after vbus is on
pd: move tDRPHold to after vbus is on

Move tDRPHold timeout to after vbus is on. This makes sure we give
the right amount of time for a dual-role device to recognize that
it should be the UFP.

BUG=none
BRANCH=samus
TEST=make buildall

Signed-off-by: Alec Berg <alecaberg@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/227720
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
Reviewed-by: Todd Broch <tbroch@chromium.org>
(cherry picked from commit 5142cdce2d72069c0970fe33b2b7f18bbd5ee469)
Signed-off-by: Duncan Laurie <70662b43bc1a20b57ded72a2b08be88dd0da4841@chromium.org>

Change-Id: I8432eb172783c689d636a435073bb86828488b06
Reviewed-on: https://chromium-review.googlesource.com/229129
Tested-by: Duncan Laurie <70662b43bc1a20b57ded72a2b08be88dd0da4841@chromium.org>
Reviewed-by: Duncan Laurie <70662b43bc1a20b57ded72a2b08be88dd0da4841@chromium.org>
Commit-Queue: Duncan Laurie <70662b43bc1a20b57ded72a2b08be88dd0da4841@chromium.org>

thehobn/ec,thehobn/ec,thehobn/ec,thehobn/ec