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

keyboards/rmi_kb/squishytkl/config.h

@@ -17,7 +17,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-#define RGB_DI_PIN C15
 #    define RGBLED_NUM 16
 //#    define RGBLIGHT_HUE_STEP 8
 //#    define RGBLIGHT_SAT_STEP 8

keyboards/rmi_kb/squishytkl/info.json

@@ -8,6 +8,9 @@
         "pid": "0x00B1",
         "device_version": "1.0.0"
     },
+    "ws2812": {
+        "pin": "C15"
+    },
     "matrix_pins": {
         "cols": ["A15", "C10", "C11", "C12", "D2", "A7", "C4", "C5", "B0", "B1", "B2", "B10", "B12", "B13", "B14", "B15", "C6", "C9", "C7", "C8", "A10", "A4", "C14", "A3", "A2", "C3"],
         "rows": ["B3", "B4", "B5", "C13", "B9", "B8", "A0", "A1", "A9", "A8", "B11", "A6", "A5", "C0"]