Move SOFT_SERIAL_PIN to data driven (#19863)

keyboards/obosob/arch_36/config.h

@@ -24,11 +24,6 @@ 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
-
 #ifdef RGBLIGHT_ENABLE
 #define RGB_DI_PIN D3
 #define RGBLED_SPLIT { 6, 6 }

keyboards/obosob/arch_36/info.json

@@ -8,6 +8,9 @@
         "pid": "0x9CE3",
         "device_version": "0.0.1"
     },
+    "split": {
+        "soft_serial_pin": "D2"
+    },
     "processor": "atmega32u4",
     "bootloader": "caterina",
     "community_layouts": ["split_3x5_3"],

keyboards/obosob/steal_this_keyboard/config.h

@@ -16,7 +16,4 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-/* serial.c configuration for split keyboard */
-#define SOFT_SERIAL_PIN D2
-
 #define EE_HANDS

keyboards/obosob/steal_this_keyboard/info.json

@@ -19,6 +19,7 @@
         ]
     },
     "split": {
+        "soft_serial_pin": "D2",
         "matrix_pins": {
             "right": {
                 "direct": [