powerpc: Fix sstep compile on powerpcspe

[Michael Ellerman]

On Thu, 2016-05-05 at 20:44:44 UTC, Lennart Sorensen wrote:
> powerpc: Fix sstep compile on powerpcspe
> 
> Commit be96f63375a14ee8e690856ac77e579c75bd0bae introduced ldarx and stdcx
> into the instructions in sstep.c, which are not accepted by the assembler
> on powerpcspe, but does seem to be accepted by the normal powerpc assembler
> even in 32 bit mode.
> 
> Wrap these two instructions in a __powerpc64__ check like it is everywhere
> else in the file.
> 
> Fixes: be96f63375a1 ("powerpc: Split out instruction analysis part of emulate_step()")
> Signed-off-by: Len Sorensen <lsorense at csclub.uwaterloo.ca>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/03be7e53dee606c189a66a7389

cheers