Migrate rgblight.pin and RGB_DI_PIN to ws2812.pin (#20303)

keyboards/handwired/atreus50/config.h

@@ -23,7 +23,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define LOCKING_RESYNC_ENABLE
 
 /* ws2812 RGB LED */
-#define RGB_DI_PIN C6
 #define RGBLIGHT_EFFECT_BREATHING
 #define RGBLIGHT_EFFECT_RAINBOW_MOOD
 #define RGBLIGHT_EFFECT_RAINBOW_SWIRL

keyboards/handwired/atreus50/info.json

@@ -8,6 +8,9 @@
     "pid": "0x040D",
     "device_version": "0.0.1"
   },
+  "ws2812": {
+    "pin": "C6"
+  },
   "matrix_pins": {
     "cols": ["D4", "D7", "E6", "B4", "B5", "B6", "B2", "B3", "B1", "F7", "F6", "F5", "F4"],
     "rows": ["D3", "D2", "D1", "D0"]