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/octeontx2/rvu_pf.c b/drivers/net/octeontx2/rvu_pf.c
index 246fca2..d74a196 100644
--- a/drivers/net/octeontx2/rvu_pf.c
+++ b/drivers/net/octeontx2/rvu_pf.c
@@ -20,7 +20,7 @@
 int rvu_pf_init(struct rvu_pf *rvu)
 {
 	struct nix *nix;
-	struct eth_pdata *pdata = dev_get_platdata(rvu->dev);
+	struct eth_pdata *pdata = dev_get_plat(rvu->dev);
 
 	debug("%s: Allocating nix lf\n", __func__);
 	nix = nix_lf_alloc(rvu->dev);