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/arch/x86/cpu/intel_common/p2sb.c b/arch/x86/cpu/intel_common/p2sb.c
index 5f7ae2d..804835a 100644
--- a/arch/x86/cpu/intel_common/p2sb.c
+++ b/arch/x86/cpu/intel_common/p2sb.c
@@ -57,7 +57,7 @@
  */
 static int p2sb_early_init(struct udevice *dev)
 {
-	struct p2sb_platdata *plat = dev_get_platdata(dev);
+	struct p2sb_platdata *plat = dev_get_plat(dev);
 	pci_dev_t pdev = plat->bdf;
 
 	/*
@@ -93,7 +93,7 @@
 int p2sb_ofdata_to_platdata(struct udevice *dev)
 {
 	struct p2sb_uc_priv *upriv = dev_get_uclass_priv(dev);
-	struct p2sb_platdata *plat = dev_get_platdata(dev);
+	struct p2sb_platdata *plat = dev_get_plat(dev);
 
 #if !CONFIG_IS_ENABLED(OF_PLATDATA)
 	int ret;