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>
diff --git a/arch/m68k/mac/macints.c b/arch/m68k/mac/macints.c
index 3cee6d2..98497d2 100644
--- a/arch/m68k/mac/macints.c
+++ b/arch/m68k/mac/macints.c
@@ -214,7 +214,7 @@
 #ifdef DEBUG_MACINTS
 	printk("mac_init_IRQ(): Setting things up...\n");
 #endif
-	m68k_setup_irq_chip(&mac_irq_chip, IRQ_USER,
+	m68k_setup_irq_controller(&mac_irq_chip, handle_simple_irq, IRQ_USER,
 				  NUM_MAC_SOURCES - IRQ_USER);
 	/* Make sure the SONIC interrupt is cleared or things get ugly */
 #ifdef SHUTUP_SONIC