From: Anton Blanchard <anton@samba.org>

From: Nathan Lynch <nathanl@austin.ibm.com>

Somehow we've been placing the rtas error_log file at /proc/ppc64/error_log,
which breaks at least one application I know of.  It is supposed to be at
/proc/ppc64/rtas/error_log (this is the 2.4 behavior).