misc: imx8: scu: simplify code to make it extendable

clk and pinctrl will be get(probed) during each device probe,
we don't need to probe them in scu driver. Only need to bind the sub-nodes
(clk and iomuxc) of MU node with their drivers.

So drop the code to probe the clk/pinctrl, and this patch will make it
easy to add more subnodes.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
1 file changed