uboot-imx

MLK-22528 imx8: cpu: get reg with new bindings for sid

The dash-linux tree has dropped pd tree, so we could not get the reg.
The power-doamins property has a cell indicating the resource id,
let's use it for sid programming.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Ye Li <ye.li@nxp.com>