Add support for disabling encoder control for feedrate multiplier

Signed-off-by: Matthew Schick <matthew.schick@gmail.com>

Marlin/Configuration_adv.h

@@ -239,6 +239,11 @@
 #define MANUAL_FEEDRATE {50*60, 50*60, 4*60, 60}  // set the speeds for manual moves (mm/min)
 #endif
 
+//Comment to disable setting feedrate multiplier via encoder
+#ifdef ULTIPANEL
+    #define ULTIPANEL_FEEDMULTIPLY
+#endif
+
 // minimum time in microseconds that a movement needs to take if the buffer is emptied.
 #define DEFAULT_MINSEGMENTTIME        20000