TCPMv2: Ensure that error flags are cleared upon reset
TCPMv2: Ensure that error flags are cleared upon reset

Ensure that error flags are cleared upon hard reset.

BUG=b:156306710
TEST=USB-C Monitor is now seen after power-on.
BRANCH=none

Signed-off-by: Andrew McRae <44ad1424cfc8411c96d9181798ca41ae55709dfb@google.com>
Change-Id: Id70f209d1335ed260603d7aed15a3255ec832cbf
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2216099
Tested-by: Andrew McRae <44ad1424cfc8411c96d9181798ca41ae55709dfb@chromium.org>
Reviewed-by: Jett Rink <9d4aef0593e6843318d99df31597fb6153b89787@chromium.org>
Reviewed-by: Diana Z <cb2016afc7183e5356c690dc63b4ba817470501a@chromium.org>
Commit-Queue: Andrew McRae <44ad1424cfc8411c96d9181798ca41ae55709dfb@chromium.org>

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