Add board detection for Odroid XU3 / XU3Lite / XU4

This patchset adds:
- 'cpu-model' dts property for Chromebook Peach Pi as Exynos5800
- set the cpu id of Exynos5422 to 0x5422
- S2MPS11 PMIC I/O driver
- ADC uclass implementation
- Exynos5420-compatible (9-channel, 12-bit) ADC driver
- new file for Exynos5: exynos5-dt-types.c
- board detection for Odroid XU3 / XU3lite / XU4
- fixed ADC value for XU4 detection

This was tested on Odroid XU3/XU3 Lite/XU4 and sandbox.

Tested with buildman for samsung.

Available on github:
https://github.com/bobenstein/u-boot/tree/xu3-detect-patchset-v1
https://github.com/bobenstein/u-boot/tree/xu3-detect-patchset-v2
https://github.com/bobenstein/u-boot/tree/xu3-detect-patchset-v3

Przemyslaw Marczak (14):
samsung: board/misc: check returned pointer for get_board_type() calls
s5p: cpu_info: print "cpu-model" if exists in dts
Peach-Pi: dts: add cpu-model string
Exynos5422/5800: set cpu id to 0x5422
dm: pmic: add s2mps11 PMIC I/O driver
dm: regulator: add function device_get_supply_regulator()
dm: adc: add simple ADC uclass implementation
dm: adc: add Exynos54xx compatible ADC driver
Odroid-XU3: enable s2mps11 PMIC support
Exynos54xx: dts: add ADC node
Odroid-XU3: dts: enable ADC, with request for pre-reloc bind
exynos5-dt-types: add board detection for Odroid XU3/XU3L/XU4.
sandbox: add ADC driver
sandbox: add ADC unit tests

 arch/arm/cpu/armv7/s5p-common/cpu_info.c   |  14 +-
 arch/arm/dts/exynos5422-odroidxu3.dts      |  12 +
 arch/arm/dts/exynos54xx.dtsi               |   7 +
 arch/arm/dts/exynos5800-peach-pi.dts       |   1 +
 arch/arm/mach-exynos/clock.c               |  16 +-
 arch/arm/mach-exynos/clock_init_exynos5.c  |   2 +-
 arch/arm/mach-exynos/common_setup.h        |   4 +-
 arch/arm/mach-exynos/include/mach/adc.h    |  44 ++++
 arch/arm/mach-exynos/include/mach/cpu.h    |   6 +-
 arch/arm/mach-exynos/include/mach/gpio.h   |   4 +-
 arch/arm/mach-exynos/pinmux.c              |   2 +-
 arch/arm/mach-exynos/power.c               |   2 +-
 arch/sandbox/dts/sandbox_pmic.dtsi         |   2 +-
 arch/sandbox/dts/test.dts                  |   6 +
 board/samsung/common/Makefile              |   5 +-
 board/samsung/common/board.c               |   4 +-
 board/samsung/common/exynos5-dt-types.c    | 196 ++++++++++++++
 board/samsung/common/exynos5-dt.c          |  12 +
 board/samsung/common/misc.c                |   3 +
 configs/odroid-xu3_defconfig               |   5 +
 configs/sandbox_defconfig                  |   2 +
 doc/device-tree-bindings/adc/adc.txt       |  62 +++++
 doc/device-tree-bindings/exynos/soc.txt    |  21 ++
 doc/device-tree-bindings/pmic/s2mps11.txt  |  17 ++
 drivers/Kconfig                            |   2 +
 drivers/Makefile                           |   1 +
 drivers/adc/Kconfig                        |  30 +++
 drivers/adc/Makefile                       |  10 +
 drivers/adc/adc-uclass.c                   | 409 +++++++++++++++++++++++++++++
 drivers/adc/exynos-adc.c                   | 145 ++++++++++
 drivers/adc/sandbox.c                      | 174 ++++++++++++
 drivers/power/pmic/Kconfig                 |  14 +
 drivers/power/pmic/Makefile                |   1 +
 drivers/power/pmic/s2mps11.c               |  62 +++++
 drivers/power/regulator/regulator-uclass.c |   7 +
 include/adc.h                              | 288 ++++++++++++++++++++
 include/configs/odroid_xu3.h               |  12 +
 include/dm/uclass-id.h                     |   1 +
 include/power/regulator.h                  |  16 ++
 include/power/s2mps11.h                    | 109 ++++++++
 include/power/sandbox_pmic.h               |   4 +
 include/samsung/exynos5-dt-types.h         |  27 ++
 test/dm/Makefile                           |   1 +
 test/dm/adc.c                              | 165 ++++++++++++
 44 files changed, 1904 insertions(+), 23 deletions(-)
 create mode 100644 board/samsung/common/exynos5-dt-types.c
 create mode 100644 doc/device-tree-bindings/adc/adc.txt
 create mode 100644 doc/device-tree-bindings/exynos/soc.txt
 create mode 100644 doc/device-tree-bindings/pmic/s2mps11.txt
 create mode 100644 drivers/adc/Kconfig
 create mode 100644 drivers/adc/Makefile

 create mode 100644 drivers/adc/adc-uclass.c
 create mode 100644 drivers/adc/exynos-adc.c
 create mode 100644 drivers/adc/sandbox.c
 create mode 100644 drivers/power/pmic/s2mps11.c
 create mode 100644 include/adc.h
 create mode 100644 include/power/s2mps11.h
 create mode 100644 include/samsung/exynos5-dt-types.h
 create mode 100644 test/dm/adc.c