superblock: All 3.4 kernels need end_writeback()

Change-Id: I5b0e702cf00c5f58e5db5b32bd5f8438f4203273

exfat_super.c

@@ -1987,7 +1987,7 @@ static void exfat_evict_inode(struct inode *inode)
 	if (!inode->i_nlink)
 		i_size_write(inode, 0);
 	invalidate_inode_buffers(inode);
-#if LINUX_VERSION_CODE < KERNEL_VERSION(3,4,80)
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3,5,0)
 	end_writeback(inode);
 #else
 	clear_inode(inode);