fuse: fix all W=1 kernel-doc warnings

Use correct function name in kernel-doc notation. (1)
Don't use "/**" to begin non-kernel-doc comments. (3)

Fixes these warnings:

fs/fuse/cuse.c:272: warning: expecting prototype for cuse_parse_dev_info(). Prototype was for cuse_parse_devinfo() instead
fs/fuse/dev.c:212: warning: expecting prototype for A new request is available, wake fiq(). Prototype was for fuse_dev_wake_and_unlock() instead
fs/fuse/dir.c:149: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
 * Mark the attributes as stale due to an atime change.  Avoid the invalidate if
fs/fuse/file.c:656: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
 * In case of short read, the caller sets 'pos' to the position of
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>

fs/fuse/cuse.c

@@ -256,7 +256,7 @@ static int cuse_parse_one(char **pp, char *end, char **keyp, char **valp)
 }
 
 /**
- * cuse_parse_dev_info - parse device info
+ * cuse_parse_devinfo - parse device info
  * @p: device info string
  * @len: length of device info string
  * @devinfo: out parameter for parsed device info

fs/fuse/dev.c

@@ -204,7 +204,7 @@ static unsigned int fuse_req_hash(u64 unique)
 	return hash_long(unique & ~FUSE_INT_REQ_BIT, FUSE_PQ_HASH_BITS);
 }
 
-/**
+/*
  * A new request is available, wake fiq->waitq
  */
 static void fuse_dev_wake_and_unlock(struct fuse_iqueue *fiq)

fs/fuse/dir.c

@@ -145,7 +145,7 @@ static void fuse_dir_changed(struct inode *dir)
 	inode_maybe_inc_iversion(dir, false);
 }
 
-/**
+/*
  * Mark the attributes as stale due to an atime change.  Avoid the invalidate if
  * atime is not used.
  */

fs/fuse/file.c

@@ -689,7 +689,7 @@ static ssize_t fuse_get_res_by_io(struct fuse_io_priv *io)
 	return io->bytes < 0 ? io->size : io->bytes;
 }
 
-/**
+/*
  * In case of short read, the caller sets 'pos' to the position of
  * actual end of fuse request in IO request. Otherwise, if bytes_requested
  * == bytes_transferred or rw == WRITE, the caller sets 'pos' to -1.