Provide a SERVO0_PIN for non-standard LCD

Marlin/src/pins/pins_ANET_10.h

@@ -185,6 +185,8 @@
     #define STD_ENCODER_PULSES_PER_STEP 4
     #define STD_ENCODER_STEPS_PER_MENU_ITEM 1
   #endif
+#else
+  #define SERVO0_PIN         27
 #endif  // ULTRA_LCD && NEWPANEL
 
 /**