dm: treewide: Rename ..._platdata variables to just ..._plat

Try to maintain some consistency between these variables by using _plat as
a suffix for them.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/include/usb.h b/include/usb.h
index 9e1ec53..b3851fd 100644
--- a/include/usb.h
+++ b/include/usb.h
@@ -597,16 +597,16 @@
 
 #if CONFIG_IS_ENABLED(DM_USB)
 /**
- * struct usb_platdata - Platform data about a USB controller
+ * struct usb_plat - Platform data about a USB controller
  *
  * Given a USB controller (UCLASS_USB) dev this is dev_get_plat(dev)
  */
-struct usb_platdata {
+struct usb_plat {
 	enum usb_init_type init_type;
 };
 
 /**
- * struct usb_dev_platdata - Platform data about a USB device
+ * struct usb_dev_plat - Platform data about a USB device
  *
  * Given a USB device dev this structure is dev_get_parent_plat(dev).
  * This is used by sandbox to provide emulation data also.
@@ -617,7 +617,7 @@
  * @strings:	List of descriptor strings (for sandbox emulation purposes)
  * @desc_list:	List of descriptors (for sandbox emulation purposes)
  */
-struct usb_dev_platdata {
+struct usb_dev_plat {
 	struct usb_device_id id;
 	int devnum;
 	/*
@@ -659,14 +659,14 @@
 };
 
 /**
- * struct usb_emul_platdata - platform data about the USB emulator
+ * struct usb_emul_plat - platform data about the USB emulator
  *
  * Given a USB emulator (UCLASS_USB_EMUL) 'dev', this is
  * dev_get_uclass_plat(dev).
  *
  * @port1:	USB emulator device port number on the parent hub
  */
-struct usb_emul_platdata {
+struct usb_emul_plat {
 	int port1;	/* Port number (numbered from 1) */
 };