dt-bindings: clock: rk3128: Drop CLK_NR_CLKS

CLK_NR_CLKS should not be part of the binding. Let's drop it, since
the kernel code no longer uses it either.

Signed-off-by: Alex Bee <knaerzche@gmail.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20240606143401.32454-4-knaerzche@gmail.com


Signed-off-by: Heiko Stuebner <heiko@sntech.de>