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/drivers/misc/altera_sysid.c b/drivers/misc/altera_sysid.c
index 091f055..057b431 100644
--- a/drivers/misc/altera_sysid.c
+++ b/drivers/misc/altera_sysid.c
@@ -17,7 +17,7 @@
 	u32	timestamp;	/* Timestamp */
 };
 
-struct altera_sysid_platdata {
+struct altera_sysid_plat {
 	struct altera_sysid_regs *regs;
 };
 
@@ -59,7 +59,7 @@
 static int altera_sysid_read(struct udevice *dev,
 			     int offset, void *buf, int size)
 {
-	struct altera_sysid_platdata *plat = dev->plat;
+	struct altera_sysid_plat *plat = dev->plat;
 	struct altera_sysid_regs *const regs = plat->regs;
 	u32 *sysid = buf;
 
@@ -71,7 +71,7 @@
 
 static int altera_sysid_of_to_plat(struct udevice *dev)
 {
-	struct altera_sysid_platdata *plat = dev_get_plat(dev);
+	struct altera_sysid_plat *plat = dev_get_plat(dev);
 
 	plat->regs = map_physmem(dev_read_addr(dev),
 				 sizeof(struct altera_sysid_regs),
@@ -94,6 +94,6 @@
 	.id	= UCLASS_MISC,
 	.of_match = altera_sysid_ids,
 	.of_to_plat = altera_sysid_of_to_plat,
-	.plat_auto	= sizeof(struct altera_sysid_platdata),
+	.plat_auto	= sizeof(struct altera_sysid_plat),
 	.ops	= &altera_sysid_ops,
 };