arm64: dts: rockchip: reorder rk3399 hdmi clocks

The binding specifies the clock order to "cec", "grf", "vpll". Reorder
the clocks accordingly.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Link: https://lore.kernel.org/r/20220126145549.617165-19-s.hauer@pengutronix.de


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