ivi-shell/hmi-controller: Include config.h as to not break ivi-shell build on meson

We're going to eventually pass bindir to weston-screenshooter and we
will need config.h info.

Signed-off-by: Marius Vlad <marius.vlad0@gmail.com>

ivi-shell/hmi-controller.c

@@ -49,6 +49,8 @@
  * TODO: support fade-in when UI is ready
  */
 
+#include "config.h"
+
 #include <sys/wait.h>
 #include <unistd.h>
 #include <stdlib.h>