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/serial/serial_sh.c b/drivers/serial/serial_sh.c
index a961ead..d74f890 100644
--- a/drivers/serial/serial_sh.c
+++ b/drivers/serial/serial_sh.c
@@ -169,7 +169,7 @@
 
 static int sh_serial_setbrg(struct udevice *dev, int baudrate)
 {
-	struct sh_serial_platdata *plat = dev_get_plat(dev);
+	struct sh_serial_plat *plat = dev_get_plat(dev);
 	struct uart_port *priv = dev_get_priv(dev);
 
 	sh_serial_setbrg_generic(priv, plat->clk, baudrate);
@@ -179,7 +179,7 @@
 
 static int sh_serial_probe(struct udevice *dev)
 {
-	struct sh_serial_platdata *plat = dev_get_plat(dev);
+	struct sh_serial_plat *plat = dev_get_plat(dev);
 	struct uart_port *priv = dev_get_priv(dev);
 
 	priv->membase	= (unsigned char *)plat->base;
@@ -209,7 +209,7 @@
 
 static int sh_serial_of_to_plat(struct udevice *dev)
 {
-	struct sh_serial_platdata *plat = dev_get_plat(dev);
+	struct sh_serial_plat *plat = dev_get_plat(dev);
 	struct clk sh_serial_clk;
 	fdt_addr_t addr;
 	int ret;
@@ -240,7 +240,7 @@
 	.id	= UCLASS_SERIAL,
 	.of_match = of_match_ptr(sh_serial_id),
 	.of_to_plat = of_match_ptr(sh_serial_of_to_plat),
-	.plat_auto	= sizeof(struct sh_serial_platdata),
+	.plat_auto	= sizeof(struct sh_serial_plat),
 	.probe	= sh_serial_probe,
 	.ops	= &sh_serial_ops,
 #if !CONFIG_IS_ENABLED(OF_CONTROL)