ARM: zynq: Hang iomapped slcr address on device_node

For later usage by zynq clk driver.
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

arch/arm/mach-zynq/slcr.c

@@ -123,6 +123,8 @@ int __init zynq_early_slcr_init(void)
 		BUG();
 	}
 
+	np->data = (__force void *)zynq_slcr_base;
+
 	/* unlock the SLCR so that registers can be changed */
 	writel(SLCR_UNLOCK_MAGIC, zynq_slcr_base + SLCR_UNLOCK_OFFSET);