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/timer/atmel_pit_timer.c b/drivers/timer/atmel_pit_timer.c
index 226c680..d88a05a 100644
--- a/drivers/timer/atmel_pit_timer.c
+++ b/drivers/timer/atmel_pit_timer.c
@@ -27,7 +27,7 @@
 
 static u64 atmel_pit_get_count(struct udevice *dev)
 {
-	struct atmel_pit_platdata *plat = dev_get_platdata(dev);
+	struct atmel_pit_platdata *plat = dev_get_plat(dev);
 	struct atmel_pit_regs *const regs = plat->regs;
 	u32 val = readl(&regs->value_image);
 
@@ -36,7 +36,7 @@
 
 static int atmel_pit_probe(struct udevice *dev)
 {
-	struct atmel_pit_platdata *plat = dev_get_platdata(dev);
+	struct atmel_pit_platdata *plat = dev_get_plat(dev);
 	struct atmel_pit_regs *const regs = plat->regs;
 	struct timer_dev_priv *uc_priv = dev_get_uclass_priv(dev);
 	struct clk clk;
@@ -60,7 +60,7 @@
 
 static int atmel_pit_ofdata_to_platdata(struct udevice *dev)
 {
-	struct atmel_pit_platdata *plat = dev_get_platdata(dev);
+	struct atmel_pit_platdata *plat = dev_get_plat(dev);
 
 	plat->regs = dev_read_addr_ptr(dev);