mlxbf_gige: disable RX_DMA during NAPI poll

[David Thompson]

SRU Justification:

[Impact]

A regression has been introduced in the latest 22.04 kernel by including
the following two commits:
   revert "UBUNTU: SAUCE: Fix OOB handling RX packets in heavy traffic"
   addition of upstream "mlxbf_gige: fix receive packet race condition"
The regression will manifest as connectivity problems on "oob_net0" interface

[Fix]

Modify the GIGE driver to include the RX_DMA disable logic in its NAPI poll routine
This logic was part of "UBUNTU: SAUCE: Fix OOB handling RX packets in heavy traffic"
but not part of upstream "mlxbf_gige: fix receive packet race condition"

[Test Case]

Boot BF3 platform and ensure oob_net0 interface is up and has IP address
Bring up many IP interfaces, including oob_net0, and make sure OOB interface
is continually accessible (e.g. via ping)

[Regression Potential]

Low risk change, adding back in prior logic.

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-bluefield/5.15.0-1035.37 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux-bluefield' to 'verification-done-jammy-linux-bluefield'. If the problem still exists, change the tag 'verification-needed-jammy-linux-bluefield' to 'verification-failed-jammy-linux-bluefield'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!