powerpc/mm: Fix linux page tables build with some configs

[Michael Ellerman]

On Mon, 2018-11-26 at 01:59:16 UTC, Michael Ellerman wrote:
> For some configs the build fails with:
> 
>   arch/powerpc/mm/dump_linuxpagetables.c: In function 'populate_markers':
>   arch/powerpc/mm/dump_linuxpagetables.c:306:39: error: 'PKMAP_BASE' undeclared (first use in this function)
>   arch/powerpc/mm/dump_linuxpagetables.c:314:50: error: 'LAST_PKMAP' undeclared (first use in this function)
> 
> These come from highmem.h, including that fixes the build.
> 
> Signed-off-by: Michael Ellerman <mpe at ellerman.id.au>

Applied to powerpc fixes.

https://git.kernel.org/powerpc/c/462951cd32e1496dc64b00051dfb77

cheers