Clean up trailing whitespace

Marlin/src/module/stepper.h

 #ifdef CPU_32_BIT
   /**
    * Duration of START_TIMED_PULSE
-   * 
+   *
    * ...as measured on an LPC1768 with a scope and converted to cycles.
    * Not applicable to other 32-bit processors, but as long as others
    * take longer, pulses will be longer. For example the SKR Pro

Marlin/src/pins/esp32/pins_MRR_ESPE.h

 #define HEATER_BED_PIN    144 // 4
 
 #define CONTROLLER_FAN_PIN 147
-//#define E0_AUTO_FAN_PIN 148 // need to update Configuration_adv.h @section extruder 
-//#define E1_AUTO_FAN_PIN 149 // need to update Configuration_adv.h @section extruder 
+//#define E0_AUTO_FAN_PIN 148 // need to update Configuration_adv.h @section extruder
+//#define E1_AUTO_FAN_PIN 149 // need to update Configuration_adv.h @section extruder
 #define FAN1_PIN 149
 
 //

Marlin/src/pins/stm32/pins_BTT_BTT002_V1_0.h

 #define FAN_PIN            PB9   // Fan0
 #define FAN1_PIN           PB8   // Fan1
 
-// HAL SPI1 pins 
+// HAL SPI1 pins
 #define CUSTOM_SPI_PINS
 #if ENABLED(CUSTOM_SPI_PINS)
   #define SCK_PIN          PA5   // SPI1 SCLK

Marlin/src/pins/stm32/pins_MKS_ROBIN_MINI.h

 // 2K in a AT24C16N
 #define EEPROM_PAGE_SIZE	(uint16)0x800 // 2048
 #define EEPROM_START_ADDRESS	((uint32)(0x8000000 + 512 * 1024 - 2 * EEPROM_PAGE_SIZE))
-#define E2END (EEPROM_PAGE_SIZE - 1) 
+#define E2END (EEPROM_PAGE_SIZE - 1)
 
 //
 // Note: MKS Robin mini board is using SPI2 interface.

buildroot/share/PlatformIO/variants/FLY_F407ZG/ldscript.ld

   _sidata = LOADADDR(.data);
 
   /* Initialized data sections goes into RAM, load LMA copy after code */
-  .data : 
+  .data :
   {
     . = ALIGN(4);
     _sdata = .;        /* create a global symbol at data start */
 
   _siccmram = LOADADDR(.ccmram);
 
-  /* CCM-RAM section 
-  * 
-  * IMPORTANT NOTE! 
+  /* CCM-RAM section
+  *
+  * IMPORTANT NOTE!
   * If initialized variables will be placed in this section,
-  * the startup code needs to be modified to copy the init-values.  
+  * the startup code needs to be modified to copy the init-values.
   */
   .ccmram :
   {
     _sccmram = .;       /* create a global symbol at ccmram start */
     *(.ccmram)
     *(.ccmram*)
-    
+
     . = ALIGN(4);
     _eccmram = .;       /* create a global symbol at ccmram end */
   } >CCMRAM AT> FLASH
 
-  
+
   /* Uninitialized data section */
   . = ALIGN(4);
   .bss :
     . = . + _Min_Stack_Size;
     . = ALIGN(4);
   } >RAM
-  
+
 
   /* Remove information from the standard libraries */
   /DISCARD/ :

buildroot/share/PlatformIO/variants/FLY_F407ZG/variant.h

 // Below SPI and I2C definitions already done in the core
 // Could be redefined here if differs from the default one
 // SPI Definitions
-#define PIN_SPI_SS              PF11 
+#define PIN_SPI_SS              PF11
 #define PIN_SPI_MOSI            PB15
-#define PIN_SPI_MISO            PB14 
-#define PIN_SPI_SCK             PB13 
+#define PIN_SPI_MISO            PB14
+#define PIN_SPI_SCK             PB13
 
 
 
 //max6675
-//#define PIN_SPI_SS              PA4 
+//#define PIN_SPI_SS              PA4
 //#define PIN_SPI_SCK             PA5
 //#define PIN_SPI_MISO            PA6
 //#define PIN_SPI_MOSI            PA7