listener: initialize eventfd static values

values must be initialized to an invalid fd (static variables are
initialized to zero which is a valid eventfd descriptor).

Signed-off-by: Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@linaro.org>

src/listener_android.c

@@ -91,7 +91,8 @@ struct listener {
    int eventfd;
 };
 
-static struct listener linfo[NUM_DOMAINS_EXTEND];
+static struct listener linfo[NUM_DOMAINS_EXTEND] =
+{ [0 ... NUM_DOMAINS_EXTEND - 1] = { .thread = 0, .eventfd = -1 } };
 
 //TODO: fix this to work over any number of buffers
 //      needs qaic to support extra buffers