Small LED code reorganization (#12929)

Marlin/src/Marlin.cpp

     leds.setup();
   #endif
 
-  #if ENABLED(RGB_LED) || ENABLED(RGBW_LED)
-    SET_OUTPUT(RGB_LED_R_PIN);
-    SET_OUTPUT(RGB_LED_G_PIN);
-    SET_OUTPUT(RGB_LED_B_PIN);
-    #if ENABLED(RGBW_LED)
-      SET_OUTPUT(RGB_LED_W_PIN);
-    #endif
-  #endif
-
   #if HAS_CASE_LIGHT
+    #if DISABLED(CASE_LIGHT_USE_NEOPIXEL)
+      SET_OUTPUT(CASE_LIGHT_PIN);
+    #endif
     update_case_light();
   #endif
 

Marlin/src/feature/caselight.cpp

 
   #else // !CASE_LIGHT_USE_NEOPIXEL
 
-    SET_OUTPUT(CASE_LIGHT_PIN);
     if (USEABLE_HARDWARE_PWM(CASE_LIGHT_PIN))
       analogWrite(CASE_LIGHT_PIN, n10ct);
     else {

Marlin/src/feature/leds/leds.cpp

 LEDLights leds;
 
 void LEDLights::setup() {
+  #if ENABLED(RGB_LED) || ENABLED(RGBW_LED)
+    SET_OUTPUT(RGB_LED_R_PIN);
+    SET_OUTPUT(RGB_LED_G_PIN);
+    SET_OUTPUT(RGB_LED_B_PIN);
+    #if ENABLED(RGBW_LED)
+      SET_OUTPUT(RGB_LED_W_PIN);
+    #endif
+  #endif
   #if ENABLED(NEOPIXEL_LED)
     setup_neopixel();
   #endif