USBHost: fixed missing include (breaks build on MKR1000)

cmaglie · cmaglie · commit aa52b4831a6f · 2016-03-31T12:32:19.000+02:00
diff --git a/libraries/USBHost/src/printhex.h b/libraries/USBHost/src/printhex.h
@@ -20,6 +20,8 @@ e-mail   :  support@circuitsathome.com
 #else
 #define __PRINTHEX_H__
 
+#include <Arduino.h>
+
 void E_Notifyc(char c, int lvl);
 
 template <class T>
