TCPMv2: Do not initialize port which is not available
TCPMv2: Do not initialize port which is not available

If port doesn't exist there is no reason to initialize anything.
Go directly to Disabled state and set flags to disable PE and PRL
state machines too.

BUG=b:154602760
BRANCH=none
TEST=Flash casta. EC RW should report port 1 transition to
     Disabled state

Signed-off-by: Patryk Duda <6aed17a362577cf10cb5675888c1635d522769c1@semihalf.com>
Change-Id: I4d90324842363a5b714ee2e2953edffb30c6009f
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2250680
Reviewed-by: Diana Z <cb2016afc7183e5356c690dc63b4ba817470501a@chromium.org>

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