imx8mp: issues getting dtb with pcie enabled to boot

Hi, I am working on the imxmp-verdin platform. One of the quirks with this particular som is that it uses an internal pcie_phy clock instead of an external one like most imx8mp boards do. To get this working on mainline linux, the way clocks are defined for the pcie_phy is `clocks = <&hsio_blk_ctrl>;` However this causes u-boot to completely fail to boot with this error `Device tree error at node '__symbols__'` .

My end goal is to boot a generic arm image over pcie nvme, I don't know if this would be possible but atleast a compatible device tree would be a good starting point.

Thanks.