Replace LL_EXTENSION_SYMBOL() with EXPORT_SYMBOL() in all tests and
samples.
Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
This adds a new sample to demonstrate the use of tristate symbols
in Kconfig to build a function as an llext module or as a built-in
part of Zephyr.
Signed-off-by: Luca Burelli <l.burelli@arduino.cc>