ARM: dts: rockchip: add missing unitname to cpu_leakage efuse

The cpu_leakage efuse on rk3288 did get it right including the
unitname but on both rk3066a and rk3188 it was missing, fix that.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Rob Herring <robh@kernel.org>