sh64: Fixups for the irq_regs changes.

A few interrupt handlers were never updated, fix them up.
We were missing the irq_regs conversion also, so do that
at the same time.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh64/kernel/irq.c b/arch/sh64/kernel/irq.c
index f68b4f6..9412b71 100644
--- a/arch/sh64/kernel/irq.c
+++ b/arch/sh64/kernel/irq.c
@@ -94,6 +94,7 @@
  */
 asmlinkage int do_IRQ(unsigned long vector_num, struct pt_regs * regs)
 {
+	struct pt_regs *old_regs = set_irq_regs(regs);
 	int irq;
 
 	irq_enter();
@@ -101,13 +102,14 @@
 	irq = irq_demux(vector_num);
 
 	if (irq >= 0) {
-		__do_IRQ(irq, regs);
+		__do_IRQ(irq);
 	} else {
 		printk("unexpected IRQ trap at vector %03lx\n", vector_num);
 	}
 
 	irq_exit();
 
+	set_irq_regs(old_regs);
 	return 1;
 }