powerpc/83xx: Also save/restore SPRG4-7 during suspend

Fri Feb 22 20:47:41 AEDT 2019

On Fri, 2019-01-25 at 12:03:55 UTC, Christophe Leroy wrote:
> The 83xx has 8 SPRG registers and uses at least SPRG4
> for DTLB handling LRU.
> 
> Fixes: 2319f1239592 ("powerpc/mm: e300c2/c3/c4 TLB errata workaround")
> Cc: stable at vger.kernel.org
> Signed-off-by: Christophe Leroy <christophe.leroy at c-s.fr>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/36da5ff0bea2dc67298150ead8d84715

cheers