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/gpio/tegra186_gpio.c b/drivers/gpio/tegra186_gpio.c
index 14c9d90..cd1fb65 100644
--- a/drivers/gpio/tegra186_gpio.c
+++ b/drivers/gpio/tegra186_gpio.c
@@ -26,7 +26,7 @@
 	uint32_t port_count;
 };
 
-struct tegra186_gpio_platdata {
+struct tegra186_gpio_plat {
 	const char *name;
 	uint32_t *regs;
 };
@@ -34,7 +34,7 @@
 static uint32_t *tegra186_gpio_reg(struct udevice *dev, uint32_t reg,
 				   uint32_t gpio)
 {
-	struct tegra186_gpio_platdata *plat = dev->plat;
+	struct tegra186_gpio_plat *plat = dev->plat;
 	uint32_t index = (reg + (gpio * TEGRA186_GPIO_PER_GPIO_STRIDE)) / 4;
 
 	return &(plat->regs[index]);
@@ -166,7 +166,7 @@
  */
 static int tegra186_gpio_bind(struct udevice *parent)
 {
-	struct tegra186_gpio_platdata *parent_plat = parent->plat;
+	struct tegra186_gpio_plat *parent_plat = parent->plat;
 	struct tegra186_gpio_ctlr_data *ctlr_data =
 		(struct tegra186_gpio_ctlr_data *)dev_get_driver_data(parent);
 	uint32_t *regs;
@@ -181,7 +181,7 @@
 		return -EINVAL;
 
 	for (port = 0; port < ctlr_data->port_count; port++) {
-		struct tegra186_gpio_platdata *plat;
+		struct tegra186_gpio_plat *plat;
 		struct udevice *dev;
 
 		plat = calloc(1, sizeof(*plat));
@@ -201,7 +201,7 @@
 
 static int tegra186_gpio_probe(struct udevice *dev)
 {
-	struct tegra186_gpio_platdata *plat = dev->plat;
+	struct tegra186_gpio_plat *plat = dev->plat;
 	struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
 
 	/* Only child devices have ports */