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/dc2114x.c b/drivers/net/dc2114x.c
index 66d1618..deedfe7 100644
--- a/drivers/net/dc2114x.c
+++ b/drivers/net/dc2114x.c
@@ -625,7 +625,7 @@
 #else	/* DM_ETH */
 static int dc2114x_start(struct udevice *dev)
 {
-	struct eth_pdata *plat = dev_get_platdata(dev);
+	struct eth_pdata *plat = dev_get_plat(dev);
 	struct dc2114x_priv *priv = dev_get_priv(dev);
 
 	memcpy(priv->enetaddr, plat->enetaddr, sizeof(plat->enetaddr));
@@ -709,7 +709,7 @@
 
 static int dc2114x_probe(struct udevice *dev)
 {
-	struct eth_pdata *plat = dev_get_platdata(dev);
+	struct eth_pdata *plat = dev_get_plat(dev);
 	struct dc2114x_priv *priv = dev_get_priv(dev);
 	u16 command, status;
 	u32 iobase;