cpu: bmips: fix probe to get the address

In the device tree, the address for cpu is located in
the node "cpus", not in the cpu node (for exemple cpu@0).
So when probing cpu, the cpu address must be read in the
cpu parent.

The commit "cpu: bmips: convert to use live dt"
(sha1: c444afbbefa103d567f197393d39ec0fcca21a0c)
change this behaviour and read the address in the
cpu node when probing cpu.

We fix this by reading the address in the cpu parent.

Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>

drivers/cpu/bmips_cpu.c

@@ -407,7 +407,7 @@ int bmips_cpu_probe(struct udevice *dev)
 	const struct bmips_cpu_hw *hw =
 		(const struct bmips_cpu_hw *)dev_get_driver_data(dev);
 
-	priv->regs = dev_remap_addr(dev);
+	priv->regs = dev_remap_addr(dev_get_parent(dev));
 	if (!priv->regs)
 		return -EINVAL;