This consolidates logic for handling "on"/"off" parsing for bools into the
strtobool function, by way of moving it into kstrtobool (with helpers),
and updating various callers.

v3:
- removed unused "base" argument
- fixed missing description change
- retained inverted __setup return values
- removed needless extra buffer in cifs

v2:
- moved to kstroto* style

 arch/powerpc/kernel/rtasd.c                    |    7 --
 arch/powerpc/platforms/pseries/hotplug-cpu.c   |   10 ---
 arch/s390/kernel/time.c                        |    8 ---
 arch/s390/kernel/topology.c                    |    7 --
 arch/x86/kernel/aperture_64.c                  |   12 ----
 drivers/net/wireless/marvell/mwifiex/debugfs.c |   10 +--
 fs/cifs/cifs_debug.c                           |   56 +++++----------------
 fs/cifs/cifs_debug.h                           |    2 
 fs/cifs/cifsfs.c                               |    6 +-
 fs/cifs/cifsglob.h                             |    4 -
 include/linux/kernel.h                         |    2 
 include/linux/string.h                         |    6 +-
 include/linux/tick.h                           |    2 
 kernel/time/hrtimer.c                          |   10 ---
 kernel/time/tick-sched.c                       |   10 ---
 lib/kstrtox.c                                  |   64 +++++++++++++++++++++++++
 lib/string.c                                   |   29 -----------
 17 files changed, 110 insertions(+), 135 deletions(-)

-Kees