Update fs *_MAGIC constants
Update fs *_MAGIC constants

Add fs *_MAGIC constants exported by linux uapi.

* xlat/fsmagic.in: Add BFS_MAGIC, GFS2_MAGIC, and ROMFS_MAGIC constants
defined in linux/bfs_fs.h, linux/gfs2_ondisk.h, and linux/romfs_fs.h,
respectively.

cuviper/strace,cuviper/strace,cuviper/strace,cuviper/strace,cuviper/strace