JFS: Allow security.* xattrs to be set on symlinks

All of the different xattr namespaces have different rules.
user.* and ACL's are not allowed on symlinks, and since these were the
first xattrs implemented, I assumed there was no need to support xattrs
on symlinks.  This one-line patch should fix it.
Signed-off-by: NDave Kleikamp <shaggy@austin.ibm.com>

fs/jfs/xattr.c

@@ -781,7 +781,7 @@ static int can_set_xattr(struct inode *inode, const char *name,
 	if (IS_RDONLY(inode))
 		return -EROFS;
 
-	if (IS_IMMUTABLE(inode) || IS_APPEND(inode) || S_ISLNK(inode->i_mode))
+	if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
 		return -EPERM;
 
 	if(strncmp(name, XATTR_SYSTEM_PREFIX, XATTR_SYSTEM_PREFIX_LEN) == 0)