MM: Support more pagesizes for MAP_HUGETLB/SHM_HUGETLB v7 fix fix fix fix

MM: Support more pagesizes for MAP_HUGETLB/SHM_HUGETLB v7 fix fix fix fix

Move the definitions of MAP_HUGE_SHIFT and MAP_HUGE_MASK to mman-common.h
and fixup the architectures which do not use that file to fix the
following build failure:

mm/mmap.c: In function 'SYSC_mmap_pgoff':
mm/mmap.c:1271:15: error: 'MAP_HUGE_SHIFT' undeclared (first use in this function)
mm/mmap.c:1271:15: note: each undeclared identifier is reported only once for each function it appears in
mm/mmap.c:1271:33: error: 'MAP_HUGE_MASK' undeclared (first use in this function)

Tested on alpha, hppa, ia64, mips, powerpc, sparc, and x86.

Signed-off-by: David Rientjes <rientjes@google.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>