thunderbolt: Set path power management packet support bit for USB4 v2 routers

thunderbolt: Set path power management packet support bit for USB4 v2 routers

USB4 v2 spec allows USB4 links that are part of a pass through tunnel
(such as DisplayPort and USB 3.x Gen T) to enter lower CL states, which
provide better power management. For this USB4 v2 routers in their path
config space of lane 0 adapter include a new bit PMPS (PM packet
support) that needs to be set.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>