Move RGBLED_SPLIT to data driven (#21113)

Co-authored-by: Joel Challis <git@zvecr.com>

keyboards/splitkb/kyria/rev2/config.h

@@ -47,8 +47,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #    define SOFT_SERIAL_PIN D2
 #endif
 
-#define RGBLED_SPLIT \
-    { 10, 10 }
 #define RGBLED_NUM 20
 
 #ifdef OLED_ENABLE

keyboards/splitkb/kyria/rev2/info.json

@@ -4,6 +4,9 @@
         "pid": "0x9D9D",
         "device_version": "0.0.2"
     },
+    "rgblight": {
+        "split_count": [10, 10]
+    },
     "rgb_matrix": {
         "driver": "WS2812"
     },