Abuse the preprocessor

include/module.h

 #define MODULE_GENERIC_TABLE(gtype,name)
    static const unsigned long 
       __module_##gtype##_size
       __attribute__ ((unused)) = sizeof(struct gtype##_id);
    static const struct gtype##_id 
       *__module_##gtype##_table
        __attribute__ ((unused)) = name

 #define MODULE_DEVICE_TABLE(type,name)
    MODULE_GENERIC_TABLE(type##_device,name)