ARCv2: intc: Use kflag if STATUS32.IE must be reset

In the end of "arc_init_IRQ" STATUS32.IE flag is going to be affected by
"flag" instruction but "flag" never touches IE flag on ARCv2. So "kflag"
instruction must be used instead of "flag".
Signed-off-by: Yuriy Kolerov <yuriy.kolerov@synopsys.com>
Cc: stable@vger.kernel.org #4.2+
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>

arch/arc/kernel/intc-arcv2.c

@@ -74,7 +74,7 @@ void arc_init_IRQ(void)
 	tmp = read_aux_reg(0xa);
 	tmp |= STATUS_AD_MASK | (irq_prio << 1);
 	tmp &= ~STATUS_IE_MASK;
-	asm volatile("flag %0	\n"::"r"(tmp));
+	asm volatile("kflag %0	\n"::"r"(tmp));
 }
 
 static void arcv2_irq_mask(struct irq_data *data)