32 bit boards classification cleanup (#10818)

- Ordering and match classification between `boards.h` and `pins.h`
- Check `pins.h` environments

Marlin/src/core/boards.h

@@ -176,6 +176,7 @@
 //
 // SAM3X8E ARM Cortex M3
 //
+
 #define BOARD_DUE3DOM          1411   // DUE3DOM for Arduino DUE
 #define BOARD_DUE3DOM_MINI     1412   // DUE3DOM MINI for Arduino DUE
 #define BOARD_RADDS            1502   // RADDS
@@ -204,6 +205,7 @@
 //
 // STM32 ARM Cortex-M3
 //
+
 #define BOARD_STM32F1R         1800   // STM3R Libmaple based STM32F1 controller
 #define BOARD_MALYAN_M200      1801   // STM32C8T6 Libmaple based stm32f1 controller
 #define BOARD_STM3R_MINI       1803   // STM32 Libmaple based stm32f1 controller
@@ -211,6 +213,7 @@
 //
 // STM32 ARM Cortex-M4F
 //
+
 #define BOARD_TEENSY35_36       841   // Teensy3.5 and Teensy3.6
 #define BOARD_BEAST            1802   // STM32FxxxVxT6 Libmaple based stm32f4 controller
 #define BOARD_STM32F4          1804   // STM32 STM32GENERIC based STM32F4 controller
@@ -218,6 +221,7 @@
 //
 // ARM Cortex M7
 //
+
 #define BOARD_THE_BORG         1860   // THE-BORG (Power outputs: Hotend0, Hotend1, Bed, Fan)