Nico Huber has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/37222 )
Change subject: soc/amd/stoneyridge|vc: Change default locations for blobs ......................................................................
Patch Set 3:
Looks like this was merged too early before the submodule update that makes the files available in 3rdparty/amd_blobs/.
Because there's another change that makes it build without the blobs, which generates a very specific warning message without breaking the build. A simple Kconfig inclusion after the blobs become available than includes the blobs.
It's still a regression. Before this change the default paths were pointing to existing files, now they don't.
That's intentional, it has to do with new license. It forces the user to read the license before activating the build variable in Kconfig. Once it's activated, the build process downloads it from a separate repository, same as seabios.
Can you please read the top quote again. We are talking past each other. I know exactly what you are doing and merely pointed out that the files are not available *yet*. It seems somebody forgot to update the submodule pointer.