powerpc: Fix workaround for spurious MCE on POWER9

[Michael Ellerman]

On Fri, 2017-09-29 at 03:37:35 UTC, Michael Neuling wrote:
> In the recent commit:
>   d8bd9f3f09 powerpc: Handle MCE on POWER9 with only DSISR bit 30 set
> I screwed up the bit.  It should be bit 25 (IBM bit 38).
> 
> Signed-off-by: Michael Neuling <mikey at neuling.org>

Applied to powerpc fixes, thanks.

https://git.kernel.org/powerpc/c/bca73f595a566f0262967535bb5b2e

cheers