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/ftmac100.c b/drivers/net/ftmac100.c
index de7ec4d..5c2887e 100644
--- a/drivers/net/ftmac100.c
+++ b/drivers/net/ftmac100.c
@@ -318,7 +318,7 @@
 #ifdef CONFIG_DM_ETH
 static int ftmac100_start(struct udevice *dev)
 {
-	struct eth_pdata *plat = dev_get_platdata(dev);
+	struct eth_pdata *plat = dev_get_plat(dev);
 	struct ftmac100_data *priv = dev_get_priv(dev);
 
 	return _ftmac100_init(priv, plat->enetaddr);
@@ -360,7 +360,7 @@
 
 int ftmac100_read_rom_hwaddr(struct udevice *dev)
 {
-	struct eth_pdata *pdata = dev_get_platdata(dev);
+	struct eth_pdata *pdata = dev_get_plat(dev);
 	eth_env_get_enetaddr("ethaddr", pdata->enetaddr);
 	return 0;
 }
@@ -396,7 +396,7 @@
 static int ftmac100_ofdata_to_platdata(struct udevice *dev)
 {
 	struct ftmac100_data *priv = dev_get_priv(dev);
-	struct eth_pdata *pdata = dev_get_platdata(dev);
+	struct eth_pdata *pdata = dev_get_plat(dev);
 	const char *mac;
 	pdata->iobase = dev_read_addr(dev);
 	priv->iobase = pdata->iobase;