Change loopCmdProcessing signature to use Stream objects.

Author: phardy

src/CmdCallback.cpp

@@ -8,7 +8,7 @@
 
 void CmdCallbackObject::loopCmdProcessing(CmdParser *      cmdParser,
                                           CmdBufferObject *cmdBuffer,
-                                          HardwareSerial * serial)
+                                          Stream * serial)
 {
     do {
         // read data

src/CmdCallback.hpp

@@ -38,7 +38,7 @@ class CmdCallbackObject
      * @param serial            Arduino serial interface from comming data
      */
     void loopCmdProcessing(CmdParser *cmdParser, CmdBufferObject *cmdBuffer,
-                           HardwareSerial *serial);
+                           Stream *serial);
 
     /**
      * Search command in the buffer and execute the callback function.