Fix build from implicit declaration.

Turn the warning on by default and turn on -Werror so this doesn't
happen next time.

Change-Id: Id65bf0cb63bbf0ff224655b425463ae2f55435df
diff --git a/minadbd/adb_main.c b/minadbd/adb_main.c
index a62881d..f6e2401 100644
--- a/minadbd/adb_main.c
+++ b/minadbd/adb_main.c
@@ -21,9 +21,11 @@
 
 #define  TRACE_TAG   TRACE_ADB
 
-#include "adb.h"
 #include "sysdeps.h"
 
+#include "adb.h"
+#include "transport.h"
+
 int adb_main(int is_daemon, int server_port)
 {
     atexit(usb_cleanup);