m68k/irq: Add m68k_setup_irq_controller()

This is a wrapper around m68k_setup_irq_chip() that discards its dummy
second parameter, to ease the future transition to genirq.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

arch/m68k/sun3/sun3ints.c

@@ -109,7 +109,8 @@ void __init sun3_init_IRQ(void)
 	*sun3_intreg = 1;
 
 	m68k_setup_auto_interrupt(sun3_inthandle);
-	m68k_setup_irq_chip(&sun3_irq_chip, IRQ_AUTO_1, 7);
+	m68k_setup_irq_controller(&sun3_irq_chip, handle_simple_irq,
+				  IRQ_AUTO_1, 7);
 	m68k_setup_user_interrupt(VEC_USER, 128, NULL);
 
 	if (request_irq(IRQ_AUTO_5, sun3_int5, 0, "int5", NULL))