powerpc/pseries: Fix build break when MEMORY_HOTREMOVE=n

[Michael Ellerman]

On Thu, 2017-02-16 at 03:01:18 UTC, Michael Ellerman wrote:
> We broke the build when CONFIG_MEMORY_HOTREMOVE=n:
> 
>   arch/powerpc/platforms/pseries/hotplug-memory.c:821:8: error: implicit
>   declaration of function 'dlpar_memory_readd_by_index'
> 
> Add a dummy to fix it.
> 
> Fixes: e70d59700fc3 ("powerpc/pseries: Introduce memory hotplug READD operation")
> Signed-off-by: Michael Ellerman <mpe at ellerman.id.au>
> Reviewed-by: Nathan Fontenot <nfont at linux.vnet.ibm.com>

Applied to powerpc next.

https://git.kernel.org/powerpc/c/f84775c2d5d92581f2df60d53b574b

cheers