irqchip/xilinx: Do not call irq_set_default_host()

Using a default domain on DT based platforms is unnecessary.
Signed-off-by: Mubin Sayyed <mubin.usman.sayyed@xilinx.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20200317125600.15913-5-mubin.usman.sayyed@xilinx.com

drivers/irqchip/irq-xilinx-intc.c

@@ -250,7 +250,6 @@ static int __init xilinx_intc_of_init(struct device_node *intc,
 		}
 	} else {
 		primary_intc = irqc;
-		irq_set_default_host(primary_intc->root_domain);
 		set_handle_irq(xil_intc_handle_irq);
 	}