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/net/bcm6348-eth.c b/drivers/net/bcm6348-eth.c
index 7c79e9a..aad7b61 100644
--- a/drivers/net/bcm6348-eth.c
+++ b/drivers/net/bcm6348-eth.c
@@ -264,7 +264,7 @@
 
 static int bcm6348_eth_write_hwaddr(struct udevice *dev)
 {
-	struct eth_pdata *pdata = dev_get_platdata(dev);
+	struct eth_pdata *pdata = dev_get_plat(dev);
 	struct bcm6348_eth_priv *priv = dev_get_priv(dev);
 	bool running = false;
 
@@ -380,7 +380,7 @@
 
 static int bcm6348_phy_init(struct udevice *dev)
 {
-	struct eth_pdata *pdata = dev_get_platdata(dev);
+	struct eth_pdata *pdata = dev_get_plat(dev);
 	struct bcm6348_eth_priv *priv = dev_get_priv(dev);
 	struct mii_dev *bus;
 
@@ -412,7 +412,7 @@
 
 static int bcm6348_eth_probe(struct udevice *dev)
 {
-	struct eth_pdata *pdata = dev_get_platdata(dev);
+	struct eth_pdata *pdata = dev_get_plat(dev);
 	struct bcm6348_eth_priv *priv = dev_get_priv(dev);
 	struct ofnode_phandle_args phy;
 	const char *phy_mode;