Nanopi4 based SoCs (NanoPC-T4, NanoPi M4*, and NanoPi Neo4) have
assigned-clock* in the pcie_phy node. Handle them but do not fail
in case clk_set_assigned() returns an error (as it would for
other SoCs).
Reviewed by: ..
MFC After: 2 weeks
Differential Revision: ..