🚸 TH3D EZBoard V2 TMC slave addresses (#23857)

Marlin/src/pins/stm32f4/pins_TH3D_EZBOARD_V2.h

 
   // Reduce baud rate to improve software serial reliability
   #define TMC_BAUD_RATE                    19200
+
+  // Default TMC slave addresses
+  #ifndef X_SLAVE_ADDRESS
+    #define X_SLAVE_ADDRESS  0
+  #endif
+  #ifndef Y_SLAVE_ADDRESS
+    #define Y_SLAVE_ADDRESS  1
+  #endif
+  #ifndef Z_SLAVE_ADDRESS
+    #define Z_SLAVE_ADDRESS  2
+  #endif
+  #ifndef E0_SLAVE_ADDRESS
+    #define E0_SLAVE_ADDRESS 3
+  #endif
 #endif
 
 //