usb: phy: Add module parameter for eud connected case

Currently phy driver cannot distinguish between physical
and spoof disconnect. For EUD to work after spoof disconnect
driver should not power down the phy and deassert TCSR
register. So this change adds module parameter to distinguish
between spoof disconnect and physical disconnect. As a part of
EUD enablement user should set this parameter as true.

Change-Id: Ibe11173ba6c79043cc8eefb45092d6900e2913ce
Signed-off-by: Pratham Pratap <prathampratap@codeaurora.org>