Use wired_split in config

Author: seanlano

config/ergodash.keymap

@@ -8,12 +8,21 @@
 #include <dt-bindings/zmk/keys.h>
 #include <dt-bindings/zmk/bt.h>
 
+&pro_micro_serial {
+    status = "okay";
+};
+
 #define DEFAULT 0
 #define LOWER   1
 #define RAISE   2
 
 
 / {
+        wired_split {
+            compatible = "zmk,wired-split";
+            device = <&pro_micro_serial>;
+        };
+
         keymap {
                 compatible = "zmk,keymap";