[PULL v2][SRU Yakkety] Support IPMI system interface for Cavium ThunderX

[dann frazier]

[This is the same text as the Xenial PR, so you don't need to read it twice :)]

This corrects the LP Bug ID # from v1.

This is a set of cherry picks from upstream that introduces the
i2c-thunderx driver, which is required to access the IPMI system
interface (/dev/ipmi0) on Cavium ThunderX.  The series starts by
refactoring the i2c-octeon driver before introducing the new one since
they share common code. i2c-octeon is only applicable to Cavium
MIPS-based platforms, so it isn't a regression risk to Ubuntu
(-ENOPORT).

All of the changes necessary to get us in-sync with zesty were
isolated to these drivers, so I did a kitchen-sink backport. This
means it includes some low-priority changes (code cleanup/docs) but,
since this is effectively new code for us, that seemed like the
lowest-risk and most maintainable approach.

Tested on a Cavium CRB1S.

BugLink: https://bugs.launchpad.net/bugs/1688132

The following changes since commit f1aba076b2a13b159527dfdb4dd43e16f2185438:

  tracing: Use strlcpy() instead of strcpy() in __trace_find_cmdline()
(2017-05-16 12:38:20 -0300)

are available in the git repository at:

  git://git.launchpad.net/~dannf/ubuntu/+source/linux/+git/linux thunderx-ipmi-y

for you to fetch changes up to 1e34d63488f97e4675c57ff7562a7e03722c2b2e:

  i2c: thunderx: Enable HWMON class probing (2017-05-19 09:13:23 -0600)

----------------------------------------------------------------
Dmitry Bazhenov (2):
      i2c: octeon: Fix set SCL recovery function
      i2c: octeon: Avoid sending STOP during recovery

Jan Glauber (13):
      i2c: octeon: Rename driver to prepare for split
      i2c: octeon: Split the driver into two parts
      i2c: thunderx: Add i2c driver for ThunderX SOC
      i2c: thunderx: Add SMBUS alert support
      i2c: octeon,thunderx: Move register offsets to struct
      i2c: octeon: Sort include files alphabetically
      i2c: octeon: Use booleon values for booleon variables
      i2c: octeon: thunderx: Add MAINTAINERS entry
      i2c: octeon: Fix high-level controller status check
      i2c: octeon: thunderx: TWSI software reset in recovery
      i2c: octeon: thunderx: Remove double-check after interrupt
      i2c: octeon: thunderx: Limit register access retries
      i2c: thunderx: Enable HWMON class probing

dann frazier (1):
      UBUNTU: [Config] CONFIG_I2C_THUNDERX=m

 MAINTAINERS                                        |    8 +
 debian.master/config/annotations                   |    2 +
 debian.master/config/config.common.ubuntu          |    1 +
 drivers/i2c/busses/Kconfig                         |   11 +
 drivers/i2c/busses/Makefile                        |    3 +
 .../i2c/busses/{i2c-octeon.c => i2c-octeon-core.c} | 1062 ++++++--------------
 drivers/i2c/busses/i2c-octeon-core.h               |  222 ++++
 drivers/i2c/busses/i2c-octeon-platdrv.c            |  288 ++++++
 drivers/i2c/busses/i2c-thunderx-pcidrv.c           |  260 +++++
 9 files changed, 1094 insertions(+), 763 deletions(-)
 rename drivers/i2c/busses/{i2c-octeon.c => i2c-octeon-core.c} (53%)
 create mode 100644 drivers/i2c/busses/i2c-octeon-core.h
 create mode 100644 drivers/i2c/busses/i2c-octeon-platdrv.c
 create mode 100644 drivers/i2c/busses/i2c-thunderx-pcidrv.c