Integrate meta-seco-imx/cf/fix_kernel

Commit: clea-os/layers/seco/meta-seco-imx@a9db7a92

[FIX] fix console for imx8 kernel

The console variable tty has been changed due to a undesired stop of the kernel for the imx8 boards

Signed-off-by: carlo carlo.ferriolo@seco.com