dm: treewide: Rename 'platdata' variables to just 'plat'

We use 'priv' for private data but often use 'platdata' for platform data.
We can't really use 'pdata' since that is ambiguous (it could mean private
or platform data).

Rename some of the latter variables to end with 'plat' for consistency.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/video/bridge/anx6345.c b/drivers/video/bridge/anx6345.c
index 147cdcc..93fa25f 100644
--- a/drivers/video/bridge/anx6345.c
+++ b/drivers/video/bridge/anx6345.c
@@ -74,7 +74,7 @@
 static int anx6345_write_r0(struct udevice *dev, unsigned char reg_addr,
 			    unsigned char value)
 {
-	struct dm_i2c_chip *chip = dev_get_parent_platdata(dev);
+	struct dm_i2c_chip *chip = dev_get_parent_plat(dev);
 
 	return anx6345_write(dev, chip->chip_addr, reg_addr, value);
 }
@@ -82,7 +82,7 @@
 static int anx6345_read_r0(struct udevice *dev, unsigned char reg_addr,
 			   unsigned char *value)
 {
-	struct dm_i2c_chip *chip = dev_get_parent_platdata(dev);
+	struct dm_i2c_chip *chip = dev_get_parent_plat(dev);
 
 	return anx6345_read(dev, chip->chip_addr, reg_addr, value);
 }
@@ -90,7 +90,7 @@
 static int anx6345_write_r1(struct udevice *dev, unsigned char reg_addr,
 			    unsigned char value)
 {
-	struct dm_i2c_chip *chip = dev_get_parent_platdata(dev);
+	struct dm_i2c_chip *chip = dev_get_parent_plat(dev);
 
 	return anx6345_write(dev, chip->chip_addr + 1, reg_addr, value);
 }
@@ -98,7 +98,7 @@
 static int anx6345_read_r1(struct udevice *dev, unsigned char reg_addr,
 			   unsigned char *value)
 {
-	struct dm_i2c_chip *chip = dev_get_parent_platdata(dev);
+	struct dm_i2c_chip *chip = dev_get_parent_plat(dev);
 
 	return anx6345_read(dev, chip->chip_addr + 1, reg_addr, value);
 }