This continues the work on getting the selftests to build without
requiring people to first run "make headers" [1].
Now that the system call numbers are in the correct, checked-in
locations in the kernel tree (./tools/include/uapi/asm/unistd*.h),
make sure that the mm selftests include that file (indirectly).
Doing so provides guaranteed definitions at build time, so remove all of
the checks for "ifdef __NR_xxx" in the mm selftests, because they will
always be true (defined).
[1] commit e076eaca5906 ("selftests: break the dependency upon local
header files")
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: Jeff Xu <jeffxu@xxxxxxxxxxxx>
Signed-off-by: John Hubbard <jhubbard@xxxxxxxxxx>
---