coresight: dts: binding: Fix example for TPIU component

TPIU component has an input port. The example uses out-ports
which is wrong. Let us fix it.
Reported-by: NLeo Yan <leo.yan@linaro.org>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: NSuzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: NMathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Documentation/devicetree/bindings/arm/coresight.txt

@@ -132,7 +132,7 @@ Example:
 
 		clocks = <&oscclk6a>;
 		clock-names = "apb_pclk";
-		out-ports {
+		in-ports {
 			port {
 				tpiu_in_port: endpoint@0 {
 					remote-endpoint = <&replicator_out_port1>;