[PULL u-boot] Please pull u-boot-amlogic-20210222

[Neil Armstrong]

Hi Tom,

These changes adds support for reading the ADC key on the Khadas VIM3 & VIM3L, in the same
time it adds plumbing for ADC keys and a test for sandbox.

The CI job is at https://gitlab.denx.de/u-boot/custodians/u-boot-amlogic/pipelines/6461

Thanks,
Neil

The following changes since commit 496f49464d90b564da5f1a2f4eecb5553e01edf9:

  Merge branch '2021-02-16-assorted-improvements' (2021-02-16 15:14:34 -0500)

are available in the Git repository at:

  https://gitlab.denx.de/u-boot/custodians/u-boot-amlogic.git tags/u-boot-amlogic-20210222

for you to fetch changes up to 2d339efb1ff941705a770e93494427912689ce18:

  button: add udevice forward declaration (2021-02-22 11:07:57 +0100)

----------------------------------------------------------------
- adds adc-keys button driver
- fix meson-saradc driver to get reference voltage
- add adc-keys test for sandbox
- enable adc-keys for VIM3 & VIM3L boards
- fix button.h build

----------------------------------------------------------------
Marek Szyprowski (5):
      dt-bindings: input: adc-keys bindings documentation
      button: add a simple Analog to Digital Converter device based button driver
      adc: meson-saradc: add support for getting reference voltage value
      configs: khadas-vim3(l): enable Function button support
      test: add a simple test for the adc-keys button driver

Neil Armstrong (1):
      button: add udevice forward declaration

 arch/sandbox/dts/test.dts                   |  28 +++++-
 configs/khadas-vim3_defconfig               |   2 +
 configs/khadas-vim3l_defconfig              |   2 +
 configs/sandbox_defconfig                   |   1 +
 doc/device-tree-bindings/input/adc-keys.txt |  67 +++++++++++++
 drivers/adc/meson-saradc.c                  |  21 ++++
 drivers/button/Kconfig                      |   8 ++
 drivers/button/Makefile                     |   1 +
 drivers/button/button-adc.c                 | 146 ++++++++++++++++++++++++++++
 include/button.h                            |   2 +
 test/dm/button.c                            |  50 +++++++++-
 11 files changed, 325 insertions(+), 3 deletions(-)
 create mode 100644 doc/device-tree-bindings/input/adc-keys.txt
 create mode 100644 drivers/button/button-adc.c