powerpc: remove newly added extra definition of pmd_dirty

[Michael Ellerman]

On Thu, 2016-21-01 at 02:05:20 UTC, Stephen Rothwell wrote:
> Commit d5d6a443b243 ("arch/powerpc/include/asm/pgtable-ppc64.h:
> add pmd_[dirty|mkclean] for THP") added a new identical definition
> of pdm_dirty.  Remove it again.
> 
> Cc: Minchan Kim <minchan at kernel.org>
> Cc: Andrew Morton <akpm at linux-foundation.org>
> Signed-off-by: Stephen Rothwell <sfr at canb.auug.org.au>

Applied to powerpc fixes, thanks.

https://git.kernel.org/powerpc/c/0e2bce7411542fa336ef490414

cheers