I must correct what I said earlier about the versions of RPis I have. Should have waited until get back home instead of I depending on the picture from the screen with the errors.
It took a bit of effort to check the version on actual hardware as all my 4 RPis are in Pi rack, so it's bit cramped and dusty now. So, checked it and my main testing device is RPi 3 model B v1.2, then tested booting Centos 8 twice really on RPIs 3 Model B+. Also have RPi 4 but for obvious reasons not even tried to boot Centos 8 on it.
Now, earlier I got the BCM number from the logs that were displayed when booting Cenots 8, which do seem to be correct? As I just checked both test devices that are running Centos 7: RPi3B and RPi3B+, and they report in /proc/cpuinfo:
3B+: Hardware: BCM2835 Revision: a020d3 Model: Raspberry Pi 3 Model B Plus Rev 1.3
3B: Hardware: BCM2835 Revision: a02082 Model: Raspberry Pi 3 Model B Rev 1.2
Thanks,
Marcin