usb: typec: ucsi: Don't stop alt mode registration on busy condition

If the PPM says it's busy, we can now simply try again.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20210920142419.54493-3-heikki.krogerus@linux.intel.com


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