BREAKING CHANGE
This commit introduces a Kconfig switch to include the cmocka binary
built from cmocka_main.c. The default behaviour is now changed so that
cmocka is built as a library only, which would be the desired behaviour
for users creating their own cmocka projects.
To restore the old behaviour (where the cmocka program is compiled), add
CONFIG_TESTING_CMOCKA_PROG=y to your legacy configuration.
Signed-off-by: Matteo Golin <matteo.golin@gmail.com>
