Merge 'kspp' from https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git (for-next/kspp)

Merged-SHA: c2606fb910d7cade63ee7e9c28e6a4225d0383f6

 MAINTAINERS                             |  2 +-
 drivers/misc/lkdtm/Makefile             |  2 +-
 drivers/misc/lkdtm/bugs.c               | 27 ++++++++++++++
 drivers/misc/lkdtm/core.c               |  2 +-
 drivers/misc/lkdtm/powerpc.c            | 49 +++++++++++++++++++++++++
 include/linux/stddef.h                  | 65 +++++++++++++++++++++++++++++++++
 lib/string_helpers.c                    |  8 ++--
 scripts/gcc-plugins/gcc-common.h        |  4 +-
 tools/testing/selftests/lkdtm/tests.txt |  1 +
 9 files changed, 152 insertions(+), 8 deletions(-)