sysfs: make s_elem an anonymous union

Make s_elem an anonymous union.  Prefixing with s_elem makes things
needlessly longer without any advantage.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/fs/sysfs/inode.c b/fs/sysfs/inode.c
index 0d706a8..b6ac4e6 100644
--- a/fs/sysfs/inode.c
+++ b/fs/sysfs/inode.c
@@ -172,7 +172,7 @@
 		inode->i_fop = &sysfs_file_operations;
 		break;
 	case SYSFS_KOBJ_BIN_ATTR:
-		bin_attr = sd->s_elem.bin_attr.bin_attr;
+		bin_attr = sd->s_bin_attr.bin_attr;
 		inode->i_size = bin_attr->size;
 		inode->i_fop = &bin_fops;
 		break;