TCPMv2: Ensure previous Vbus is turned off on init
TCPMv2: Ensure previous Vbus is turned off on init

When we boot from reset, other board components may still be sourcing
out to partners.  Ensure these are turned off during init time.

BRANCH=None
BUG=b:168931726
TEST=on waddledee, EC reset with servo attached as a sink and ensure
DUT is able to start sourcing to servo

Signed-off-by: Diana Z <cb2016afc7183e5356c690dc63b4ba817470501a@chromium.org>
Change-Id: I5a5de7f510ce81307c7155659a03f401eac3a885
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2424703
Reviewed-by: Jett Rink <9d4aef0593e6843318d99df31597fb6153b89787@chromium.org>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec