x86: Allow the PCH and LPC uclasses to work with of-platdata

At present these uclasses assumes that they are used with a device tree.
Update them to support of-platdata as well.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

arch/x86/lib/lpc-uclass.c

@@ -10,5 +10,7 @@
 UCLASS_DRIVER(lpc) = {
 	.id		= UCLASS_LPC,
 	.name		= "lpc",
+#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
 	.post_bind	= dm_scan_fdt_dev,
+#endif
 };

drivers/pch/pch-uclass.c

@@ -64,5 +64,7 @@ int pch_ioctl(struct udevice *dev, ulong req, void *data, int size)
 UCLASS_DRIVER(pch) = {
 	.id		= UCLASS_PCH,
 	.name		= "pch",
+#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
 	.post_bind	= dm_scan_fdt_dev,
+#endif
 };