seco-pnmtologo: Add seco-pnmtologo recipe
The seco-pnmtologo tool is a variant of the in-kernel pnmtologo tool. See also https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/drivers/video/logo/pnmtologo.c?h=v5.15.71
The SECO Northern Europe variant adds a binary output mode. The binary output can be used by the SECO Northern Europe boot logo implementation.
Use oelint-adv to lint the recipe.