isofs: add missing MODULE_DESCRIPTION()

Fix the 'make W=1' warning:
WARNING: modpost: missing MODULE_DESCRIPTION() in fs/isofs/isofs.o
Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Message-Id: <20240526-md-fs-isofs-v1-1-60e2e36a3d46@quicinc.com>

fs/isofs/inode.c

@@ -1625,4 +1625,5 @@ static void __exit exit_iso9660_fs(void)
 
 module_init(init_iso9660_fs)
 module_exit(exit_iso9660_fs)
+MODULE_DESCRIPTION("ISO 9660 CDROM file system support");
 MODULE_LICENSE("GPL");