parport: serial: Get rid of IRQ_NONE abuse

IRQ_NONE definition is solely for IRQ handlers and not for generic
probe code. Replace it with plain integer.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20210721150216.64823-1-andriy.shevchenko@linux.intel.com


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