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

keyboards/rate/pistachio/rev1/config.h

@@ -20,7 +20,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define USE_I2C
 
 /* ws2812 RGB LED */
-#define RGB_DI_PIN D2
 #define RGBLIGHT_SPLIT
 #define RGBLED_SPLIT { 1, 1 }
 #define RGBLED_NUM 2

keyboards/rate/pistachio/rev1/info.json

@@ -1,4 +1,7 @@
 {
+    "ws2812": {
+        "pin": "D2"
+    },
     "matrix_pins": {
         "cols": ["F4", "F5", "F6", "F7", "B1", "B3", "B2", "B6", "D3"],
         "rows": ["D4", "C6", "D7", "E6", "B4", "B5"]