The only change that SLOF does not rely on QEMU providing an RTAS blob
and provides one itself:
https://git.qemu.org/?p=SLOF.git;a=commitdiff;h=5e4ed1fd0f39e



Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>