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

keyboards/spaceholdings/nebula12b/config.h

@@ -19,7 +19,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 /* RGB options */
 
-#define RGB_DI_PIN D5
 #define RGB_MATRIX_LED_COUNT 16
 #define RGB_MATRIX_MAXIMUM_BRIGHTNESS 255
 #define RGB_DISABLE_WHEN_USB_SUSPENDED

keyboards/spaceholdings/nebula12b/info.json

@@ -8,6 +8,9 @@
         "pid": "0x5332",
         "device_version": "0.0.1"
     },
+    "ws2812": {
+        "pin": "D5"
+    },
     "matrix_pins": {
         "cols": ["F4", "F5", "D7"],
         "rows": ["B7", "B4", "F7", "F6"]