Follow-up the PR #4955, etc

・More ANALOG NUMBERING to Analog Input
・Add comment header to all the section of all the pins files

・Sort sections as follows:
1. Some special definitions (USBCON, LARGE_FLASH, etc)
2. Servos
3. Limit Switches
4. Z Probe
5. Steppers
6. Temperature Sensors
7. Heaters / Fans
8. Misc. Functions
9. LCD / Controller

・Move MAX6675_SS into "Temperature Sensors" section
・Adjust spacing

Marlin/pins_MEGACONTROLLER.h

@@ -82,12 +82,6 @@
 #define E1_DIR_PIN         27
 #define E1_ENABLE_PIN      25
 
-//
-// Misc. Functions
-//
-#define SDSS               53
-#define LED_PIN            13
-
 //
 // Temperature Sensors
 //
@@ -126,6 +120,12 @@
 
 #define FAN_SOFT_PWM
 
+//
+// Misc. Functions
+//
+#define SDSS               53
+#define LED_PIN            13
+
 //
 // LCD / Controller
 //
@@ -150,4 +150,3 @@
 
   #define SD_DETECT_PIN    49
 #endif // MINIPANEL
-