Suppress undefined module warnings in elixir examples
Prevent displaying a warning about undefined modules when compiling
`examples/elixir/esp32/Ledc_x4.ex` along with the VM when using
multiple jobs (i.e. `make -j8`). These errors are not shown if `make`
is run without extra jobs.
#
defmodule Ledc_x4 do
+ # this compiler option is to suppress warnings when compiling the VM
+ # it is not needed or recommended for user apps.
+ @compile {:no_warn_undefined, [LEDC]}
@moduledoc """
Ledc_example for Elixir.
"""
