[PARPORT] Consolidate code copies into a single generic irq handler

Several arches used the exact same code for their parport irq handling.
Make that code generic, in parport_irq_handler().

Also, s/__inline__/inline/ in include/linux/parport.h.

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
diff --git a/drivers/parport/parport_pc.c b/drivers/parport/parport_pc.c
index e2be840..e9743d3 100644
--- a/drivers/parport/parport_pc.c
+++ b/drivers/parport/parport_pc.c
@@ -272,13 +272,6 @@
  * of these are in parport_pc.h.
  */
 
-static irqreturn_t parport_pc_interrupt(int irq, void *dev_id)
-{
-	parport_generic_irq(irq, (struct parport *) dev_id);
-	/* FIXME! Was it really ours? */
-	return IRQ_HANDLED;
-}
-
 static void parport_pc_init_state(struct pardevice *dev, struct parport_state *s)
 {
 	s->u.pc.ctr = 0xc;
@@ -2301,7 +2294,7 @@
 		EPP_res = NULL;
 	}
 	if (p->irq != PARPORT_IRQ_NONE) {
-		if (request_irq (p->irq, parport_pc_interrupt,
+		if (request_irq (p->irq, parport_irq_handler,
 				 0, p->name, p)) {
 			printk (KERN_WARNING "%s: irq %d in use, "
 				"resorting to polled operation\n",