New kernel drivers and device migrations (#563)

Drivers/tca95xx-16bit-module/include/tca95xx_module.h

@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: Apache-2.0
+#pragma once
+
+#include <tactility/module.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// The devicetree compiler derives the expected module symbol name from this component's
+// folder name ("tca95xx-16bit-module" -> tca95xx_16bit_module), not from a name we choose.
+extern struct Module tca95xx_16bit_module;
+
+#ifdef __cplusplus
+}
+#endif