DM: I2C: Reduce overhead when used with OF_PLATDATA

Platforms with limited resources in SPL may enably OF_PLATDATA,
this limits some of the library functions and cannot extract data
from the device tree.  This patch adds additional wrappers around
these functions to only allow them when OF_CONTROL is enabled and
OF_PLATDATA is not.

Signed-off-by: Adam Ford <aford173@gmail.com>

drivers/i2c/i2c-uclass.c

@@ -562,7 +562,7 @@ int i2c_deblock(struct udevice *bus)
 	return ops->deblock(bus);
 }
 
-#if CONFIG_IS_ENABLED(OF_CONTROL)
+#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
 int i2c_chip_ofdata_to_platdata(struct udevice *dev, struct dm_i2c_chip *chip)
 {
 	int addr;
@@ -584,7 +584,7 @@ int i2c_chip_ofdata_to_platdata(struct udevice *dev, struct dm_i2c_chip *chip)
 
 static int i2c_post_probe(struct udevice *dev)
 {
-#if CONFIG_IS_ENABLED(OF_CONTROL)
+#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
 	struct dm_i2c_bus *i2c = dev_get_uclass_priv(dev);
 
 	i2c->speed_hz = dev_read_u32_default(dev, "clock-frequency", 100000);
@@ -597,7 +597,7 @@ static int i2c_post_probe(struct udevice *dev)
 
 static int i2c_child_post_bind(struct udevice *dev)
 {
-#if CONFIG_IS_ENABLED(OF_CONTROL)
+#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
 	struct dm_i2c_chip *plat = dev_get_parent_platdata(dev);
 
 	if (!dev_of_valid(dev))
@@ -612,7 +612,7 @@ UCLASS_DRIVER(i2c) = {
 	.id		= UCLASS_I2C,
 	.name		= "i2c",
 	.flags		= DM_UC_FLAG_SEQ_ALIAS,
-#if CONFIG_IS_ENABLED(OF_CONTROL)
+#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
 	.post_bind	= dm_scan_fdt_dev,
 #endif
 	.post_probe	= i2c_post_probe,