MLECO-1948: Fix for SysTick init and GNU's stdout

The counter val could have been 0 when read the first time
quickly after the init function. The init function will now
wait for the SysTick counter to start before returning.

Also included are some minor changes to get around  GNU's
file stream implementation being line buffered.

Change-Id: I8d51fef5d85f1261a6a5710608349d7ecc19ad62
diff --git a/source/application/main/include/Mfcc.hpp b/source/application/main/include/Mfcc.hpp
index 6b11ebb..86330ca 100644
--- a/source/application/main/include/Mfcc.hpp
+++ b/source/application/main/include/Mfcc.hpp
@@ -51,8 +51,8 @@
 
         ~MfccParams() = default;
 
-        /** @brief  String representation of parameters */
-        std::string Str() const;
+        /** @brief  Log parameters */
+        void Log() const;
     };
 
     /**