Switch to the new coresight bindings

Cc: Liviu Dudau <liviu.dudau@arm.com>
Cc: Sudeep Holla <sudeep.holla@arm.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
[sudeep.holla: updated title and fixed couple of remaining dtc warnings]
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>