cellular doxygen updates

Author: Teemu Kultala

features/cellular/easy_cellular/CellularConnectionFSM.h

@@ -19,7 +19,7 @@
 #define _CELLULAR_CONNECTION_UTIL_H
 
 #include "CellularTargets.h"
-#ifdef CELLULAR_DEVICE
+#if defined(CELLULAR_DEVICE) || defined(DOXYGEN_ONLY)
 
 #include "UARTSerial.h"
 #include "NetworkInterface.h"
@@ -171,6 +171,6 @@ class CellularConnectionFSM
 
 } // namespace
 
-#endif // CELLULAR_DEVICE
+#endif // CELLULAR_DEVICE || DOXYGEN
 
 #endif /* _CELLULAR_CONNECTION_UTIL_H */

features/cellular/easy_cellular/EasyCellularConnection.h

@@ -20,7 +20,7 @@
 #define EASY_CELLULAR_CONNECTION_H
 
 #include "CellularConnectionFSM.h"
-#ifdef CELLULAR_DEVICE
+#if defined(CELLULAR_DEVICE) || defined(DOXYGEN_ONLY)
 
 #include "netsocket/CellularBase.h"
 
@@ -158,7 +158,7 @@ class EasyCellularConnection: public CellularBase
 
 } // namespace
 
-#endif // CELLULAR_DEVICE
+#endif // CELLULAR_DEVICE || DOXYGEN
 
 #endif // EASY_CELLULAR_CONNECTION_H