[MIPS] Au1xxx: board specific irq code cleanup

Convert sizeof/sizeof use to use of ARRAY_SIZE macro, and annotate
irqmap structures as __initdata.

Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/au1000/mtx-1/irqmap.c b/arch/mips/au1000/mtx-1/irqmap.c
index f9a0a8b..4693a4e 100644
--- a/arch/mips/au1000/mtx-1/irqmap.c
+++ b/arch/mips/au1000/mtx-1/irqmap.c
@@ -58,7 +58,7 @@
  [7] = { -1, INTD, INTC, INTX, INTX},   /* IDSEL 07 - AdapterD-Slot1 (bottom) */
 };
 
-au1xxx_irq_map_t au1xxx_irq_map[] = {
+au1xxx_irq_map_t __initdata au1xxx_irq_map[] = {
        { AU1500_GPIO_204, INTC_INT_HIGH_LEVEL, 0},
        { AU1500_GPIO_201, INTC_INT_LOW_LEVEL, 0 },
        { AU1500_GPIO_202, INTC_INT_LOW_LEVEL, 0 },
@@ -66,4 +66,4 @@
        { AU1500_GPIO_205, INTC_INT_LOW_LEVEL, 0 },
 };
 
-int au1xxx_nr_irqs = sizeof(au1xxx_irq_map)/sizeof(au1xxx_irq_map_t);
+int __initdata au1xxx_nr_irqs = ARRAY_SIZE(au1xxx_irq_map);