Romac (#1)

* New shield: romac 2.1

app/boards/shields/romac/romac.overlay

@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) 2020 Pete Johansen, Richard Jones
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#include "romac.dtsi"
+
+&kscan0 {
+    col-gpios
+        = <&pro_micro_a  0 GPIO_ACTIVE_HIGH>
+        , <&pro_micro_d 15 GPIO_ACTIVE_HIGH>
+        , <&pro_micro_d 14 GPIO_ACTIVE_HIGH>
+        ;
+};
+
+&bt_unpair_combo {
+    key-positions = <0 11>;
+};