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

keyboards/phantom/config.h

@@ -17,7 +17,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-#define RGB_DI_PIN E2
 #    define RGBLED_NUM 20
 #    define RGBLIGHT_HUE_STEP 10
 #    define RGBLIGHT_SAT_STEP 17

keyboards/phantom/info.json

@@ -17,6 +17,9 @@
         "caps_lock": "B6",
         "scroll_lock": "B7"
     },
+    "ws2812": {
+        "pin": "E2"
+    },
     "processor": "atmega32u4",
     "bootloader": "halfkay",
     "community_layouts": ["tkl_ansi", "tkl_iso"],