Consider continued support of kernels <5.4

Feedback Feature Request
32

@Keruskerfuerst 4.x kernels got re-added with today’s testing update. This includes 4.19:

  • We readded 4.x kernels. Note that 4.4 series is now marked EOL
  • linux-firmware we kept split-up, however we ship them uncompressed to support 4.x kernels still