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/usb/host/ehci-omap.c b/drivers/usb/host/ehci-omap.c
index 51c5029..0ca20a9 100644
--- a/drivers/usb/host/ehci-omap.c
+++ b/drivers/usb/host/ehci-omap.c
@@ -368,7 +368,7 @@
 
 static int ehci_usb_ofdata_to_platdata(struct udevice *dev)
 {
-	struct usb_platdata *plat = dev_get_platdata(dev);
+	struct usb_platdata *plat = dev_get_plat(dev);
 
 	plat->init_type = USB_INIT_HOST;
 
@@ -377,7 +377,7 @@
 
 static int omap_ehci_probe(struct udevice *dev)
 {
-	struct usb_platdata *plat = dev_get_platdata(dev);
+	struct usb_platdata *plat = dev_get_plat(dev);
 	struct ehci_omap_priv_data *priv = dev_get_priv(dev);
 	struct ehci_hccr *hccr;
 	struct ehci_hcor *hcor;