All current socket samples as one of the points show portability to
POSIX platforms, and provide POSIX makefiles to let user build such
a version of application easily. These Makefiles were lost during
CMake conversion.
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
It's expected that there will be few socket-based samples, so move
tehm under samples/sockets/ to not clutter the main dir.
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>