dm: treewide: Rename ofdata_to_platdata() to of_to_plat()

This name is far too long. Rename it to remove the 'data' bits. This makes
it consistent with the platdata->plat rename.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/gpio/sandbox.c b/drivers/gpio/sandbox.c
index fa87130..2708838 100644
--- a/drivers/gpio/sandbox.c
+++ b/drivers/gpio/sandbox.c
@@ -278,7 +278,7 @@
 #endif
 };
 
-static int sandbox_gpio_ofdata_to_platdata(struct udevice *dev)
+static int sandbox_gpio_of_to_plat(struct udevice *dev)
 {
 	struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
 
@@ -318,7 +318,7 @@
 	.name	= "sandbox_gpio",
 	.id	= UCLASS_GPIO,
 	.of_match = sandbox_gpio_ids,
-	.ofdata_to_platdata = sandbox_gpio_ofdata_to_platdata,
+	.of_to_plat = sandbox_gpio_of_to_plat,
 	.probe	= gpio_sandbox_probe,
 	.remove	= gpio_sandbox_remove,
 	.ops	= &gpio_sandbox_ops,