arch, mm: convert all architectures to use 5level-fixup.h

arch, mm: convert all architectures to use 5level-fixup.h

If an architecture uses 4level-fixup.h we don't need to do anything as
it includes 5level-fixup.h.

If an architecture uses pgtable-nop*d.h, define __ARCH_USE_5LEVEL_HACK
before inclusion of the header. It makes asm-generic code to use
5level-fixup.h.

If an architecture has 4-level paging or folds levels on its own,
include 5level-fixup.h directly.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
(cherry picked from commit 9849a5697d3defb2087cb6b9be5573a142697889)

Conflicts:

	arch/arc/include/asm/hugepage.h
	arch/h8300/include/asm/pgtable.h
	arch/mips/include/asm/pgtable-64.h
	arch/powerpc/include/asm/book3s/32/pgtable.h
	arch/powerpc/include/asm/book3s/64/pgtable.h
	arch/powerpc/include/asm/nohash/32/pgtable.h
	arch/powerpc/include/asm/nohash/64/pgtable-4k.h
	arch/powerpc/include/asm/nohash/64/pgtable-64k.h

Orabug: 25808647

Signed-off-by: Vijay Kumar <vijay.ac.kumar@oracle.com>
Reviewed-by: Bob Picco <bob.picco@oracle.com>
Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com>