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/power/regulator/regulator_common.c b/drivers/power/regulator/regulator_common.c
index d307a19..93d8196 100644
--- a/drivers/power/regulator/regulator_common.c
+++ b/drivers/power/regulator/regulator_common.c
@@ -13,7 +13,7 @@
 #include "regulator_common.h"
 
 int regulator_common_of_to_plat(struct udevice *dev,
-				struct regulator_common_platdata *dev_pdata,
+				struct regulator_common_plat *dev_pdata,
 				const char *enable_gpio_name)
 {
 	struct gpio_desc *gpio;
@@ -49,7 +49,7 @@
 }
 
 int regulator_common_get_enable(const struct udevice *dev,
-	struct regulator_common_platdata *dev_pdata)
+	struct regulator_common_plat *dev_pdata)
 {
 	/* Enable GPIO is optional */
 	if (!dev_pdata->gpio.dev)
@@ -59,7 +59,7 @@
 }
 
 int regulator_common_set_enable(const struct udevice *dev,
-	struct regulator_common_platdata *dev_pdata, bool enable)
+	struct regulator_common_plat *dev_pdata, bool enable)
 {
 	int ret;