Replace mistakenly removed DIP switch configuration

keyboards/helix/rev3/keyboard.json

@@ -7,6 +7,14 @@
     },
     "development_board": "promicro",
     "diode_direction": "COL2ROW",
+    "dip_switch": {
+        "matrix_grid": [
+            [0, 6],
+            [1, 6],
+            [5, 6],
+            [6, 6]
+        ]
+    },
     "encoder": {
         "rotary": [
             {"pin_a": "B6", "pin_b": "B5"}
@@ -14,6 +22,7 @@
     },
     "features": {
         "bootmagic": true,
+        "dip_switch": false,
         "encoder": true,
         "extrakey": true,
         "mousekey": true,