- Rename WRITE_E_STEP for consistency

- Add BIT and TEST macros
- Add _APPLY_ macros to stepper.cpp to help with consolidation
- Consolidate code in stepper.cpp using macros
- Apply standards in stepper.cpp
- Use >= 0 instead of > -1 as a better semantic
- Replace DUAL_Y_CARRIAGE with Y_DUAL_STEPPER_DRIVERS

Marlin/dogm_lcd_implementation.h

@@ -24,9 +24,9 @@
   #define BLEN_A 0
   #define BLEN_B 1
   #define BLEN_C 2
-  #define EN_A (1<<BLEN_A)
-  #define EN_B (1<<BLEN_B)
-  #define EN_C (1<<BLEN_C)
+  #define EN_A BIT(BLEN_A)
+  #define EN_B BIT(BLEN_B)
+  #define EN_C BIT(BLEN_C)
   #define LCD_CLICKED (buttons&EN_C)
 #endif