sh: intc - add a clear register to struct intc_prio_reg

We need a secondary register member in struct intc_prio_reg to support
dual priority registers used by ipi on x3.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/include/asm-sh/hw_irq.h b/include/asm-sh/hw_irq.h
index a4086ea..6c759b2 100644
--- a/include/asm-sh/hw_irq.h
+++ b/include/asm-sh/hw_irq.h
@@ -53,7 +53,7 @@
 };
 
 struct intc_prio_reg {
-	unsigned long reg, reg_width, field_width;
+	unsigned long set_reg, clr_reg, reg_width, field_width;
 	intc_enum enum_ids[16];
 };