Move RGBLED_SPLIT to data driven (#21113)

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

keyboards/maple_computing/lets_split_eh/eh/config.h

@@ -20,7 +20,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 /* ws2812 RGB LED */
 #define RGBLED_NUM 12    // Number of LEDs (each hand)
-#define RGBLED_SPLIT { 6, 6 }
 #define RGBLIGHT_EFFECT_BREATHING
 #define RGBLIGHT_EFFECT_RAINBOW_MOOD
 #define RGBLIGHT_EFFECT_RAINBOW_SWIRL

keyboards/maple_computing/lets_split_eh/eh/info.json

@@ -16,6 +16,9 @@
     "backlight": {
         "pin": "B7"
     },
+    "rgblight": {
+        "split_count": [6, 6]
+    },
     "ws2812": {
         "pin": "B2"
     },