downstream: weston-init: support system's configuration file
downstream: weston-init: support system's configuration file

Change-Id: I7ff938e8b81dc553ab8077ae9ff13f01eaeded5e
Signed-off-by: Philippe Coval <ff46fec9739d31cce915aabcc3a7a2c00eee4d6c@open.eurogiciel.org>

rzr/meta-sama5d4-xplained