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/gpio/intel_broadwell_gpio.c b/drivers/gpio/intel_broadwell_gpio.c
index b05233f..2b9e1a2 100644
--- a/drivers/gpio/intel_broadwell_gpio.c
+++ b/drivers/gpio/intel_broadwell_gpio.c
@@ -117,7 +117,7 @@
 
 static int broadwell_gpio_probe(struct udevice *dev)
 {
-	struct broadwell_bank_platdata *plat = dev_get_platdata(dev);
+	struct broadwell_bank_platdata *plat = dev_get_plat(dev);
 	struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
 	struct broadwell_bank_priv *priv = dev_get_priv(dev);
 	struct udevice *pinctrl;
@@ -141,7 +141,7 @@
 
 static int broadwell_gpio_ofdata_to_platdata(struct udevice *dev)
 {
-	struct broadwell_bank_platdata *plat = dev_get_platdata(dev);
+	struct broadwell_bank_platdata *plat = dev_get_plat(dev);
 	u32 gpiobase;
 	int bank;
 	int ret;