genirq: Cleanup irq_chip->typename leftovers

3 years transition phase is enough. Cleanup the last users and remove
the cruft.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Leo Chen <leochen@broadcom.com>
Cc: Hirokazu Takata <takata@linux-m32r.org>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Chris Zankel <chris@zankel.net>

kernel/irq/chip.c

@@ -344,8 +344,6 @@ void irq_chip_set_defaults(struct irq_chip *chip)
 	if (!chip->shutdown)
 		chip->shutdown = chip->disable != default_disable ?
 			chip->disable : default_shutdown;
-	if (!chip->name)
-		chip->name = chip->typename;
 	if (!chip->end)
 		chip->end = dummy_irq_chip.end;
 }