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/led/led_cortina.c b/drivers/led/led_cortina.c
index f9e497f..c705eba 100644
--- a/drivers/led/led_cortina.c
+++ b/drivers/led/led_cortina.c
@@ -136,7 +136,7 @@
 
 	/* Top-level LED node */
 	if (!uc_plat->label) {
-		struct cortina_led_platdata *plt = dev_get_platdata(dev);
+		struct cortina_led_platdata *plt = dev_get_plat(dev);
 
 		plt->rate1 =
 			dev_read_u32_default(dev, "Cortina,blink-rate1", 256);
@@ -169,7 +169,7 @@
 
 	/* Top-level LED node */
 	if (!uc_plat->label) {
-		struct cortina_led_platdata *plat = dev_get_platdata(dev);
+		struct cortina_led_platdata *plat = dev_get_plat(dev);
 		u32 reg_value, val;
 		u16 rate1, rate2;