This reverts commit 
bf7588a0859580a45c63cb082825d77c13eca357.
Ben says although the code is not correct "[this] fix was completely
wrong and does more damages than it fixes things."
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
 {
        struct lpc_debugfs_entry *lpc = filp->private_data;
        u32 data, pos, len, todo;
-       __be32 bedata;
        int rc;
 
        if (!access_ok(VERIFY_WRITE, ubuf, count))
                                len = 2;
                }
                rc = opal_lpc_read(opal_lpc_chip_id, lpc->lpc_type, pos,
-                                  &bedata, len);
+                                  &data, len);
                if (rc)
                        return -ENXIO;
-               data = be32_to_cpu(bedata);
                switch(len) {
                case 4:
                        rc = __put_user((u32)data, (u32 __user *)ubuf);