Trailing whitespace clean

Marlin/src/HAL/HAL_AVR/HAL_spi_AVR.cpp

@@ -95,7 +95,6 @@ void spiBegin (void) {
     SPSR = spiRate & 1 || spiRate == 6 ? 0 : _BV(SPI2X);
   }
 
- 
   //------------------------------------------------------------------------------
   /** SPI receive a byte */
   uint8_t spiRec(void) {

Marlin/src/HAL/HAL_DUE/HAL_spi_Due.cpp

@@ -777,7 +777,6 @@
   /** Begin SPI transaction, set clock, bit order, data mode */
   void spiBeginTransaction(uint32_t spiClock, uint8_t bitOrder, uint8_t dataMode) {
     // TODO: to be implemented
-    
   }
 
 #endif // ENABLED(SOFTWARE_SPI)

Marlin/src/HAL/HAL_LPC1768/arduino.cpp

@@ -136,7 +136,7 @@ void analogWrite(pin_t pin, int pwm_value) {  // 1 - 254: pwm_value, 0: LOW, 255
     digitalWrite(pin, value);
   }
   else {
-    if (LPC1768_PWM_attach_pin(pin, 1, LPC_PWM1->MR0,  0xff))   
+    if (LPC1768_PWM_attach_pin(pin, 1, LPC_PWM1->MR0, 0xFF))
       LPC1768_PWM_write(pin, map(value, 0, 255, 1, LPC_PWM1->MR0));  // map 1-254 onto PWM range
     else {                                                                 // out of PWM channels
       if (!out_of_PWM_slots) MYSERIAL.printf(".\nWARNING - OUT OF PWM CHANNELS\n.\n");  //only warn once

Marlin/src/HAL/HAL_TEENSY35_36/HAL_spi_Teensy.cpp

@@ -108,5 +108,4 @@ void spiBeginTransaction(uint32_t spiClock, uint8_t bitOrder, uint8_t dataMode)
   SPI.beginTransaction(spiConfig);
 }
 
-
-#endif
+#endif // __MK64FX512__ || __MK66FX1M0__