From: Rusty Russell <rusty@rustcorp.com.au>

Move all the functions that run normally (ie.  with the kernel in the correct
address) to the bottom of prom.c, and keep all the functions which use RELOC()
to the top, above "prom_init()" which calls them.

Also, make prom_initialize_dart_table and prom_initialize_tce_table static.