Abolish per-CPU RTAS args

[Joel Schopp]

>>Will test the combined patch soon.
>
>
> Any word on this?
>

cpu 0x0: Vector: 700 (Program Check) at [c0000000005739f0]
     pc: c00000000003ab1c: .rtas_stop_self+0x34/0x70
     lr: c00000000003e25c: .cpu_die+0x30/0x3c
     sp: c000000000573c70
    msr: 8000000000021032
   current = 0xc000000000605810
   paca    = 0xc000000000574000
     pid   = 0, comm = swapper
enter ? for help
0:mon> t
[c000000000573d00] c00000000003e25c .cpu_die+0x30/0x3c
[c000000000573d70] c000000000014ee8 .default_idle+0xe8/0xec
[c000000000573e00] c0000000000151d0 .cpu_idle+0x2c/0x44
[c000000000573e70] c00000000000c548 .rest_init+0x74/0x8c
[c000000000573ef0] c0000000005218a0 .start_kernel+0x224/0x284
[c000000000573f90] c00000000000c270 .__setup_cpu_power3+0x0/0x4

Don't have time to investigate this much now, but it looks like the
rtas_stop_self didn't work so well.  Will poke at it next week.

-Joel

** Sent via the linuxppc64-dev mail list. See http://lists.linuxppc.org/