[SRU][F:linux-bluefield][PATCH v1 0/1] UBUNTU: SAUCE: i2c-mlxbf.c: revert upstreaming version

[Asmaa Mnebhi]

BugLink: https://bugs.launchpad.net/bugs/1926767

SRU Justification:

[Impact]

* This will fix a broken i2c-mlxbf.c driver for BlueField-2.

[Fix]

* Restore previous version of the driver which was tested extensively. This current version is what was upstreamed but was not tested on the new BlueField-2 boards with BMC on them.

[Test Case]

* Build a full bfb image and burn it to Camelantis and BlueWhale. Reboot.
* Tested I2C driver via IPMB. Send/Receive transactions to/from BMC.
* IPMB infrastructure enables us to test the multislave functionality.

[Regression Potential]

* This version of the driver was tested by QA/verification for a while so no known regression at the moment.