TCPMv2: Add unattached polarity
TCPMv2: Add unattached polarity

Added the tri-state polarity that was added to the
old stack so the tcpci set cc would set the correct
CC line(s).

BUG=b:146003980
BRANCH=none
TEST=Charging works with both plug orientations with AP on
TEST=Device works with both plug orientations with AP on
TEST=Charging works with both plug orientations with AP off

Change-Id: I191dd86c645a46a6bf8acfda865eb0b7ab8388b4
Signed-off-by: Denis Brockus <6b21e8190fb5e373363fb95271367073a16474ef@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1976803
Reviewed-by: Edward Hill <db1406b34e091703092b6b136bdfeb2c8125fc0e@chromium.org>
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