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/include/dm/uclass.h b/include/dm/uclass.h
index e74082f..068e8ea 100644
--- a/include/dm/uclass.h
+++ b/include/dm/uclass.h
@@ -71,15 +71,15 @@
  * @per_device_auto: Each device can hold private data owned
  * by the uclass. If required this will be automatically allocated if this
  * value is non-zero.
- * @per_device_platdata_auto: Each device can hold platform data
- * owned by the uclass as 'dev->uclass_platdata'. If the value is non-zero,
+ * @per_device_plat_auto: Each device can hold platform data
+ * owned by the uclass as 'dev->uclass_plat'. If the value is non-zero,
  * then this will be automatically allocated.
  * @per_child_auto: Each child device (of a parent in this
  * uclass) can hold parent data for the device/uclass. This value is only
  * used as a fallback if this member is 0 in the driver.
- * @per_child_platdata_auto: A bus likes to store information about
+ * @per_child_plat_auto: A bus likes to store information about
  * its children. If non-zero this is the size of this data, to be allocated
- * in the child device's parent_platdata pointer. This value is only used as
+ * in the child device's parent_plat pointer. This value is only used as
  * a fallback if this member is 0 in the driver.
  * @ops: Uclass operations, providing the consistent interface to devices
  * within the uclass.
@@ -100,9 +100,9 @@
 	int (*destroy)(struct uclass *class);
 	int priv_auto;
 	int per_device_auto;
-	int per_device_platdata_auto;
+	int per_device_plat_auto;
 	int per_child_auto;
-	int per_child_platdata_auto;
+	int per_child_plat_auto;
 	const void *ops;
 	uint32_t flags;
 };