Fixed missing ENCODER_PULSES_PER_STEP

Marlin/ultralcd.cpp

   #define ENCODER_PULSES_PER_STEP 1
 #else
   #define ENCODER_STEPS_PER_MENU_ITEM 2 // VIKI LCD rotary encoder uses a different number of steps per rotation
+  #define ENCODER_PULSES_PER_STEP 1
 #endif