Move RGBLED_SPLIT to data driven (#21113)

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

keyboards/handwired/tsubasa/config.h

@@ -20,7 +20,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #    define RGBLED_NUM 12
 #    define RGBLIGHT_SPLIT
-#    define RGBLED_SPLIT {6, 6}
 #    define RGBLIGHT_HUE_STEP 8
 #    define RGBLIGHT_SAT_STEP 1
 #    define RGBLIGHT_VAL_STEP 1

keyboards/handwired/tsubasa/info.json

@@ -8,6 +8,9 @@
         "pid": "0x0000",
         "device_version": "1.0.0"
     },
+    "rgblight": {
+        "split_count": [6, 6]
+    },
     "ws2812": {
         "pin": "D2"
     },