arm: dts: mt7623: add related clock properties to cpu[1-3] nodes

Complement the missing clock properties cpu[1-3] should depend on.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: linux-pm@vger.kernel.org
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>