MFC r277655, r277989:  Reimplement fdt_clock_register_provider() correctly.
MFC r277655, r277989:  Reimplement fdt_clock_register_provider() correctly.

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase