Enabled linear advance.

Firmware/Configuration_adv.h

@@ -316,7 +316,7 @@
     * K=0 means advance disabled.
     * See Marlin documentation for calibration instructions.
     */
-//#define LIN_ADVANCE
+#define LIN_ADVANCE
 
 #ifdef LIN_ADVANCE
   #define LIN_ADVANCE_K 0 //Try around 45 for PLA, around 25 for ABS.