Comment # 24 on bug 1193596 from Jonas Kvinge

With a bit of hacking I was able to build kernel 5.15 in OBS and install it on
the latest tumbleweed release, and it seems that plymouth works. So this issue
seem to be related to a kernel upgrade.

I had to add -Wno-use-after-free to CFLAGS and skip_encoding_btf_enum64 to
extra_paholeopt in link-vmlinux.sh, 
I also got complaint about missing mkinitrd when installing the kernel, which I
ignored and ran dracut -f manually.

Problem: 1: nothing provides 'mkinitrd >= 2.7.1' needed by the to be installed
kernel-default-5.15.4-12.1.ge2563b4.aarch64
 Solution 1: do not install kernel-default-5.15.4-12.1.ge2563b4.aarch64
 Solution 2: break kernel-default-5.15.4-12.1.ge2563b4.aarch64 by ignoring some
of its dependencies

The system doesn't boot, but the screen shows 3 dots in the middle, so it looks
like plymouth is working.