greybus: remove __init from .h files

__init does not belong in a .h file, as it does not do anything there,
so remove all instances of it.
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

drivers/staging/greybus/endo.h

@@ -49,7 +49,7 @@ struct gb_endo {
 /* Greybus "private" definitions */
 struct greybus_host_device;
 
-int gb_endo_init(void) __init;
+int gb_endo_init(void);
 void gb_endo_exit(void);
 
 struct gb_endo *gb_endo_create(struct greybus_host_device *hd,

drivers/staging/greybus/greybus.h

@@ -154,9 +154,9 @@ void greybus_deregister_driver(struct greybus_driver *driver);
 int greybus_disabled(void);
 
 int greybus_svc_in(struct greybus_host_device *hd, u8 *data, int length);
-int gb_ap_init(void) __init;
+int gb_ap_init(void);
 void gb_ap_exit(void);
-void gb_debugfs_init(void) __init;
+void gb_debugfs_init(void);
 void gb_debugfs_cleanup(void);
 struct dentry *gb_debugfs_get(void);
 

drivers/staging/greybus/operation.h

@@ -158,7 +158,7 @@ int gb_operation_sync(struct gb_connection *connection, int type,
 		      void *request, int request_size,
 		      void *response, int response_size);
 
-int gb_operation_init(void) __init;
+int gb_operation_init(void);
 void gb_operation_exit(void);
 
 #endif /* !__OPERATION_H */