Move encoder config to data driven (#19923)

Co-authored-by: Nick Brassel <nick@tzarc.org>

keyboards/swiftrax/retropad/config.h

@@ -23,9 +23,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define MATRIX_ROW_PINS { C7, C6, B5 }
 #define MATRIX_COL_PINS { B4, D2 }
 
-#define ENCODERS_PAD_A { D0 }
-#define ENCODERS_PAD_B { D1 }
-
 /* COL2ROW or ROW2COL */
 #define DIODE_DIRECTION COL2ROW
 

keyboards/swiftrax/retropad/info.json

@@ -8,6 +8,11 @@
         "pid": "0xEB0C",
         "device_version": "0.0.1"
     },
+    "encoder": {
+        "rotary": [
+            {"pin_a": "D0", "pin_b": "D1"}
+        ]
+    },
     "bootmagic": {
         "matrix": [1, 0]
     },