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/mscc_eswitch/servalt_switch.c b/drivers/net/mscc_eswitch/servalt_switch.c
index 59c0d85..4a4e9e4 100644
--- a/drivers/net/mscc_eswitch/servalt_switch.c
+++ b/drivers/net/mscc_eswitch/servalt_switch.c
@@ -323,7 +323,7 @@
 static int servalt_write_hwaddr(struct udevice *dev)
 {
 	struct servalt_private *priv = dev_get_priv(dev);
-	struct eth_pdata *pdata = dev_get_platdata(dev);
+	struct eth_pdata *pdata = dev_get_plat(dev);
 
 	return servalt_mac_table_add(priv, pdata->enetaddr, PGID_UNICAST);
 }
@@ -331,7 +331,7 @@
 static int servalt_start(struct udevice *dev)
 {
 	struct servalt_private *priv = dev_get_priv(dev);
-	struct eth_pdata *pdata = dev_get_platdata(dev);
+	struct eth_pdata *pdata = dev_get_plat(dev);
 	const unsigned char mac[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff,
 		0xff };
 	int ret;