ARC: Fix coding style issues

Fixes the following coding style issues as detected by checkpatch:
ERROR: space required before the open parenthesis '('
ERROR: "foo * bar" should be "foo *bar"
WARNING: space prohibited between function name and open parenthesis '('
WARNING: please, no spaces at the start of a line

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>

arch/arc/kernel/irq.c

@@ -102,7 +102,7 @@ void __init init_onchip_IRQ(void)
 	struct device_node *intc = NULL;
 
 	intc = of_find_compatible_node(NULL, NULL, "snps,arc700-intc");
-	if(!intc)
+	if (!intc)
 		panic("DeviceTree Missing incore intc\n");
 
 	root_domain = irq_domain_add_legacy(intc, NR_IRQS, 0, 0,