Add simple myapp application is a C app that prints hello world
and exit.
Add devtool test for that this app to the workspace, build and
reset it.
(From OE-Core rev: 2ec513c00ab2ae0f7df631d32f8f248446c90184)
Signed-off-by: Aníbal Limón <limon.anibal@gmail.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>