android: add missing include for open() definition

panda/src/android/android_main.cxx

@@ -24,6 +24,7 @@
 #include "config_display.h"
 // #define OPENGLES_1 #include "config_androiddisplay.h"
 
+#include <fcntl.h>
 #include <sys/socket.h>
 #include <arpa/inet.h>