usb: bdc: change state when port disconnected

commit fb8f60dd upstream.

When port is connected and then disconnected, the state stays as
configured. Which is incorrect as the port is no longer configured,
but in a not attached state.

Signed-off-by: Justin Chen <justinpopo6@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Fixes: efed421a ("usb: gadget: Add UDC driver for Broadcom USB3.0 device controller IP BDC")
Cc: stable <stable@kernel.org>
Link: https://lore.kernel.org/r/1664997235-18198-1-git-send-email-justinpopo6@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>