[PULL][Zesty] Low-pin-count (LPC) controller support for arm64

[dann frazier]

This is a port of the LIBIO infrastructure being prepared upstream to
handle the low-pin-count (LPC) controller support needed for HiSilicon
server SoCs, and which is also evolving into a generic PIO mapping
system for the kernel. While the direction has upstream approval and
some patches are acked, it is still evolving. I've therefore only
enabled CONFIG_LIBIO on arm64, and also added a patch to revert to the
existing PCI PIO mapping code when CONFIG_LIBIO is disabled.

Tested on a HiSilicon D05 board. Regression tested on ppc64el by Manoj
Iyer (for the OF change). Also regression tested on a Cavium ThunderX
system. Built tested on all Ubuntu archs in ppa:dannf/test.

Addresses: https://bugs.launchpad.net/bugs/1677319

The following changes since commit 4bd7900ebaac4fd554f8b062954175a1de04686f:

  UBUNTU: SAUCE: (no-up) net/mlx5: Avoid dereferencing uninitialized
pointer (2017-03-29 06:19:51 -0600)

are available in the git repository at:

  git://git.launchpad.net/~dannf/ubuntu/+source/linux/+git/linux lpc

for you to fetch changes up to 4354f8bbb202ae8374664b907d4a432e48cc057f:

  UBUNTU: SAUCE: PCI: Restore codepath for !CONFIG_LIBIO (2017-03-29
15:33:44 -0600)

----------------------------------------------------------------
dann frazier (3):
      UBUNTU: [Config] CONFIG_LIBIO=y on arm64 only
      UBUNTU: [Config] CONFIG_HISILICON_LPC=y
      UBUNTU: SAUCE: PCI: Restore codepath for !CONFIG_LIBIO

zhichang.yuan (6):
      UBUNTU: SAUCE: LIBIO: Introduce a generic PIO mapping method
      UBUNTU: SAUCE: OF: Add missing I/O range exception for indirect-IO devices
      UBUNTU: SAUCE: LPC: Support the device-tree LPC host on Hip06/Hip07
      UBUNTU: SAUCE: LIBIO: Support the dynamically logical PIO
registration of ACPI host I/O
      UBUNTU: SAUCE: LPC: Add the ACPI LPC support
      UBUNTU: SAUCE: PCI: Apply the new generic I/O management on PCI IO hosts

 Documentation/devicetree/bindings/arm/hisilicon/hisilicon-low-pin-count.txt
|  33 +++
 MAINTAINERS
      |   8 +
 arch/arm64/boot/dts/hisilicon/hip06-d03.dts
      |   4 +
 arch/arm64/boot/dts/hisilicon/hip06.dtsi
      |  14 +
 arch/arm64/boot/dts/hisilicon/hip07-d05.dts
      |   4 +
 arch/arm64/boot/dts/hisilicon/hip07.dtsi
      |  14 +
 debian.master/config/amd64/config.common.amd64
      |   1 +
 debian.master/config/arm64/config.common.arm64
      |   1 +
 debian.master/config/armhf/config.common.armhf
      |   1 +
 debian.master/config/config.common.ubuntu
      |   1 +
 debian.master/config/i386/config.common.i386
      |   1 +
 debian.master/config/ppc64el/config.common.ppc64el
      |   1 +
 debian.master/config/s390x/config.common.s390x
      |   1 +
 drivers/acpi/pci_root.c
      |   8 +-
 drivers/bus/Kconfig
      |   8 +
 drivers/bus/Makefile
      |   1 +
 drivers/bus/hisi_lpc.c
      | 640 ++++++++++++++++++++++++++++++++++++++++++++++
 drivers/of/address.c
      |  95 +++++--
 drivers/pci/pci.c
      |  47 +++-
 include/asm-generic/io.h
      |  50 ++++
 include/linux/libio.h
      | 120 +++++++++
 include/linux/pci.h
      |   3 +-
 lib/Kconfig
      |  14 +
 lib/Makefile
      |   2 +
 lib/libio.c
      | 553 +++++++++++++++++++++++++++++++++++++++
 25 files changed, 1599 insertions(+), 26 deletions(-)
 create mode 100644
Documentation/devicetree/bindings/arm/hisilicon/hisilicon-low-pin-count.txt
 create mode 100644 drivers/bus/hisi_lpc.c
 create mode 100644 include/linux/libio.h
 create mode 100644 lib/libio.c