[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/share.c b/drivers/parport/share.c
index cd66442..414c52a 100644
--- a/drivers/parport/share.c
+++ b/drivers/parport/share.c
@@ -995,6 +995,15 @@
 	}
 }
 
+irqreturn_t parport_irq_handler(int irq, void *dev_id)
+{
+	struct parport *port = dev_id;
+
+	parport_generic_irq(irq, port);
+
+	return IRQ_HANDLED;
+}
+
 /* Exported symbols for modules. */
 
 EXPORT_SYMBOL(parport_claim);
@@ -1011,5 +1020,6 @@
 EXPORT_SYMBOL(parport_put_port);
 EXPORT_SYMBOL(parport_find_number);
 EXPORT_SYMBOL(parport_find_base);
+EXPORT_SYMBOL(parport_irq_handler);
 
 MODULE_LICENSE("GPL");