dt-bindings: i2c: mellanox,i2c-mlxbf: convert txt to YAML schema

Write the devicetree binding text file associated with
the Mellanox BlueField I2C controller in schema file,
JSON compatible subset of YAML. Besides, add an entry
within MAINTAINERS file.

Signed-off-by: Khalil Blaiech <kblaiech@nvidia.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
3 files changed