Public bug reported:

SRU Justification:

[Impact]

* Sync up the current i2c-mlx.c driver with the upstreamed version. The name of 
the i2c-mlx.c driver changed to i2c-mlxbf2.c.
* Support multi slave functionality
* And fix a bug in the core frequency

[Fix]

* Sync up the current i2c-mlx.c driver with the upstreamed version
* Add logic to the slave functions to support multi slave functionality
* Make core frequency more accurate
 
[Test Case]

* I2C driver is loaded for each bus on BlueWhale and BlueSphere.
* Tested I2C driver via IPMB. Send/Receive transactions to/from BMC.
* IPMB infrastructure enables us to test the multislave functionality.

[Regression Potential]

* This new version of the i2c driver (from upstream) hasn't gone through
extensive testing yet (QA + verification team)

** Affects: linux-bluefield (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1921506

Title:
  i2c-mlx.c: sync up with upstream

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