arm: zynq: Add smp support

Zynq is dual core Cortex A9 which starts always
at zero. Using simple trampoline ensure long jump
to secondary_startup code.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>

arch/arm/mach-zynq/common.c

@@ -104,6 +104,7 @@ static const char * const zynq_dt_match[] = {
 };
 
 MACHINE_START(XILINX_EP107, "Xilinx Zynq Platform")
+	.smp		= smp_ops(zynq_smp_ops),
 	.map_io		= zynq_map_io,
 	.init_irq	= irqchip_init,
 	.init_machine	= zynq_init_machine,