vfio: platform: introduce module_vfio_reset_handler macro

The module_vfio_reset_handler macro
- define a module alias
- implement module init/exit function which respectively registers
  and unregisters the reset function.
Signed-off-by: Eric Auger <eric.auger@linaro.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>

drivers/vfio/platform/vfio_platform_private.h

@@ -110,4 +110,18 @@ static struct vfio_platform_reset_node __reset ## _node = {	\
 };								\
 __vfio_platform_register_reset(&__reset ## _node)
 
+#define module_vfio_reset_handler(compat, reset)		\
+MODULE_ALIAS("vfio-reset:" compat);				\
+static int __init reset ## _module_init(void)			\
+{								\
+	vfio_platform_register_reset(compat, reset);		\
+	return 0;						\
+};								\
+static void __exit reset ## _module_exit(void)			\
+{								\
+	vfio_platform_unregister_reset(compat, reset);		\
+};								\
+module_init(reset ## _module_init);				\
+module_exit(reset ## _module_exit)
+
 #endif /* VFIO_PLATFORM_PRIVATE_H */