Expose API for hardware unique ID (#16869)

platforms/hardware_id.h

@@ -0,0 +1,18 @@
+// Copyright 2022 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <stdint.h>
+
+/** \brief Storage for a hardware ID
+ *
+ * Ensure this is sized to cover all hardware scenarios
+ */
+typedef struct hardware_id_t {
+    uint32_t data[4];
+} hardware_id_t;
+
+/** \brief Query the devices "unique" ID
+ */
+hardware_id_t get_hardware_id(void);