fbcon asked the registry of built-in applications for the stack size and
priority to spawn its shell with. A kernel build has no such registry:
its programs are ELF files in a filesystem, which is exactly what the
posix_spawn() below already handles, PATH search and all. The lookup
therefore fails to compile there.
Ask the registry only where there is one, and take the numbers from this
example's own configuration otherwise.
Tested on an EIC7700 EVB in a kernel build: fbcon renders its console on
a 1080p HDMI framebuffer and spawns a shell whose prompt appears on the
monitor.
Assisted-by: Claude:claude-opus-5
Signed-off-by: Justin Hammond <justin@dynam.ac>
Replace app-side includes of <debug.h> with <nuttx/debug.h> to use the
header from the NuttX tree explicitly after the header move.
Signed-off-by: Piyush Patle <piyushpatle228@gmail.com>
