usb: typec: tipd: Split interrupt handler

Split the handlers for the individual interrupts into their own functions
to prepare for adding a second interrupt handler for the Apple CD321x
chips

Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Sven Peter <sven@svenpeter.dev>
Link: https://lore.kernel.org/r/20210928155502.71372-3-sven@svenpeter.dev


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