Move SOFT_SERIAL_PIN to data driven (#19863)

keyboards/recompile_keys/cocoa40/config.h

@@ -34,8 +34,4 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 /* COL2ROW, ROW2COL*/
 #define DIODE_DIRECTION COL2ROW
 
-/*
- * Split Keyboard specific options, make sure you have 'SPLIT_KEYBOARD = yes' in your rules.mk, and define SOFT_SERIAL_PIN.
- */
-#define SOFT_SERIAL_PIN D2 // or D1, D2, D3, E6
 #define SPLIT_HAND_PIN D3

keyboards/recompile_keys/cocoa40/info.json

@@ -8,6 +8,9 @@
         "pid": "0x4000",
         "device_version": "0.0.1"
     },
+    "split": {
+        "soft_serial_pin": "D2"
+    },
     "processor": "atmega32u4",
     "bootloader": "caterina",
     "layouts": {