powerpc/mm: Fix thread_pkey_regs_init()

[Michael Ellerman]

On Tue, 2018-03-27 at 02:36:54 UTC, Ram Pai wrote:
> thread_pkey_regs_init() initializes the pkey related registers
> instead of initializing the fields in the task structures.  Fortunately
> those key related registers are re-set to zero when the task
> gets scheduled on the cpu. However its good to fix this glaringly
> visible error.
> 
> cc: Michael Ellermen <mpe at ellerman.id.au>
> Signed-off-by: Ram Pai <linuxram at us.ibm.com>
> Signed-off-by: Thiago Jung Bauermann <bauerman at linux.vnet.ibm.com>
> Acked-by: Balbir Singh <bsingharora at gmail.com>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/f208638680e5cb4eb0d2871ce8c29a

cheers