ARM: dts: zynq: enablement of coresight topology

This patch is to build the coresight topology structure of zynq-7000
series according to the docs of coresight and userguide of zynq-7000.

Signed-off-by: Zumeng Chen <zumeng.chen@windriver.com>
Signed-off-by: Quanyang Wang <quanyang.wang@windriver.com>
Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>