dm: treewide: Rename dev_get_platdata() to dev_get_plat()

Rename this to be consistent with the change from 'platdata'.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/usb/eth/asix88179.c b/drivers/usb/eth/asix88179.c
index 8abcf13..4742a95 100644
--- a/drivers/usb/eth/asix88179.c
+++ b/drivers/usb/eth/asix88179.c
@@ -857,7 +857,7 @@
 
 int ax88179_write_hwaddr(struct udevice *dev)
 {
-	struct eth_pdata *pdata = dev_get_platdata(dev);
+	struct eth_pdata *pdata = dev_get_plat(dev);
 	struct asix_private *priv = dev_get_priv(dev);
 	struct ueth_data *ueth = &priv->ueth;
 
@@ -866,7 +866,7 @@
 
 static int ax88179_eth_probe(struct udevice *dev)
 {
-	struct eth_pdata *pdata = dev_get_platdata(dev);
+	struct eth_pdata *pdata = dev_get_plat(dev);
 	struct asix_private *priv = dev_get_priv(dev);
 	struct usb_device *usb_dev;
 	int ret;