The global timer is present on the Cortex A5. Add a compatibility
string to the DT binding to allow a Cortex A5 global timer.
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NMatthew Leach <matthew.leach@arm.com>
Signed-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org>