netd: softap: Change "set" to use separate arguments

Change-Id: Id5f2adb41c671f2978fa3fe939b1a3b15a537165
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
diff --git a/SoftapController.h b/SoftapController.h
index dc8936a..c42b1fa 100644
--- a/SoftapController.h
+++ b/SoftapController.h
@@ -30,6 +30,7 @@
     int mSock;
 
     int getPrivFuncNum(char *iface, const char *fname);
+    int addParam(int pos, const char *cmd, const char *arg);
 public:
     SoftapController();
     virtual ~SoftapController();