ARCv2: intc: Use ARC_REG_STATUS32 for addressing STATUS32 reg

It is better to use it instead of magic numbers.

Signed-off-by: Yuriy Kolerov <yuriy.kolerov@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
diff --git a/arch/arc/kernel/intc-arcv2.c b/arch/arc/kernel/intc-arcv2.c
index ecef0fb..6ba2a84 100644
--- a/arch/arc/kernel/intc-arcv2.c
+++ b/arch/arc/kernel/intc-arcv2.c
@@ -69,7 +69,7 @@ void arc_init_IRQ(void)
 		irq_bcr.firq ? " FIRQ (not used)":"");
 
 	/* setup status32, don't enable intr yet as kernel doesn't want */
-	tmp = read_aux_reg(0xa);
+	tmp = read_aux_reg(ARC_REG_STATUS32);
 	tmp |= STATUS_AD_MASK | (ARCV2_IRQ_DEF_PRIO << 1);
 	tmp &= ~STATUS_IE_MASK;
 	asm volatile("kflag %0	\n"::"r"(tmp));