media/dvb: add __init/__exit macros to bt878.c

Trivial patch which adds the __init/__exit macros to the module_init/
module_exit functions of

drivers/media/dvb/bt8xx/bt878.c
Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

drivers/media/dvb/bt8xx/bt878.c

@@ -582,7 +582,7 @@ static int bt878_pci_driver_registered;
 /* Module management functions */
 /*******************************/
 
-static int bt878_init_module(void)
+static int __init bt878_init_module(void)
 {
 	bt878_num = 0;
 	bt878_pci_driver_registered = 0;
@@ -600,7 +600,7 @@ static int bt878_init_module(void)
 	return pci_register_driver(&bt878_pci_driver);
 }
 
-static void bt878_cleanup_module(void)
+static void __exit bt878_cleanup_module(void)
 {
 	if (bt878_pci_driver_registered) {
 		bt878_pci_driver_registered = 0;