dm: treewide: Rename 'platdata' variables to just 'plat'

We use 'priv' for private data but often use 'platdata' for platform data.
We can't really use 'pdata' since that is ambiguous (it could mean private
or platform data).

Rename some of the latter variables to end with 'plat' for consistency.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/w1/w1-uclass.c b/drivers/w1/w1-uclass.c
index af1fe5f..8bc6cb1 100644
--- a/drivers/w1/w1-uclass.c
+++ b/drivers/w1/w1-uclass.c
@@ -130,14 +130,14 @@
 
 u8 w1_get_device_family(struct udevice *dev)
 {
-	struct w1_device *w1 = dev_get_parent_platdata(dev);
+	struct w1_device *w1 = dev_get_parent_plat(dev);
 
 	return w1->id & 0xff;
 }
 
 int w1_reset_select(struct udevice *dev)
 {
-	struct w1_device *w1 = dev_get_parent_platdata(dev);
+	struct w1_device *w1 = dev_get_parent_plat(dev);
 	struct udevice *bus = dev_get_parent(dev);
 	const struct w1_ops *ops = device_get_ops(bus);
 	int i;
@@ -235,5 +235,5 @@
 #if CONFIG_IS_ENABLED(OF_CONTROL)
 	.post_bind	= dm_scan_fdt_dev,
 #endif
-	.per_child_platdata_auto	    = sizeof(struct w1_device),
+	.per_child_plat_auto	    = sizeof(struct w1_device),
 };