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/xilinx_axi_emac.c b/drivers/net/xilinx_axi_emac.c
index 5604a33..10c6b60 100644
--- a/drivers/net/xilinx_axi_emac.c
+++ b/drivers/net/xilinx_axi_emac.c
@@ -425,7 +425,7 @@
 
 static int axiemac_write_hwaddr(struct udevice *dev)
 {
-	struct eth_pdata *pdata = dev_get_platdata(dev);
+	struct eth_pdata *pdata = dev_get_plat(dev);
 	struct axidma_priv *priv = dev_get_priv(dev);
 	struct axi_regs *regs = priv->iobase;
 
@@ -728,7 +728,7 @@
 
 static int axi_emac_ofdata_to_platdata(struct udevice *dev)
 {
-	struct eth_pdata *pdata = dev_get_platdata(dev);
+	struct eth_pdata *pdata = dev_get_plat(dev);
 	struct axidma_priv *priv = dev_get_priv(dev);
 	int node = dev_of_offset(dev);
 	int offset = 0;