Added functions to get/set motorPosition.

Changed to functions motorPosition and setMotorPosition in order to
retrieve / set motor positions from / to the paramLib.

src/turboPmacAxis.h

@@ -82,12 +82,12 @@ class turboPmacAxis : public sinqAxis {
     asynStatus init();
 
     /**
-     * @brief Reset the axis error
+     * @brief Implementation of the `doReset` function from sinqAxis.
      *
      * @param on
      * @return asynStatus
      */
-    asynStatus reset();
+    asynStatus doReset();
 
     /**
      * @brief Enable / disable the axis.