[BUG] annoying kernel message from SOF loader

[Shawn-Huang724]

Describe the bug
SOF loader of Linux kernel always prompt an error message of "unknown sof_ext_man header type 3 size 0x30" during firmware loading on all platforms.

To Reproduce
Boot SOF firmware and check the dmesg log of kernel.

Reproduction Rate
10/10, 100%.

Expected behavior
Saw "unknown sof_ext_man header type 3 size 0x30" message in dmesg log.

Impact
Annoyance.

Environment

1. Branch name and commit hash of the 2 repositories: sof (firmware/topology) and linux (kernel driver).
   • Kernel: 8121de33460d0f1441e75b6e52dae9317efd0656 (and before)
   • SOF: ef51d72
2. Name of the topology file
   • Topology: anyone.
3. Name of the platform(s) on which the bug is observed.
   • Platform: all platforms.

Screenshots or console output
unknown sof_ext_man header type 3 size 0x30 in dmesg log.

[Shawn-Huang724]

Found a recent commit which might be a solution from kernel in sof-dev branch:
thesofproject/linux@1a4efb4

[lgirdwood]

@ujfalusi pls confirm if your PR will fix and if so we can close. Thanks !