usb: gadget: udc: Handle gadget_connect failure during bind operation

In the event, gadget_connect call (which invokes pullup) fails,
propagate the error to udc bind operation which inturn sends the
error to configfs. The userspace can then retry enumeartion if
it chooses to.

Signed-off-by: Krishna Kurapati <quic_kriskura@quicinc.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/20230510075252.31023-3-quic_kriskura@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>