dm: Use dm_scan_fdt_dev() directly where possible

Quite a few places have a bind() method which just calls dm_scan_fdt_dev().
We may as well call dm_scan_fdt_dev() directly. Update the code to do this.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/pch/pch-uclass.c b/drivers/pch/pch-uclass.c
index 5b2fa1f..af794eb 100644
--- a/drivers/pch/pch-uclass.c
+++ b/drivers/pch/pch-uclass.c
@@ -54,19 +54,8 @@
 	return ops->get_io_base(dev, iobasep);
 }
 
-static int pch_uclass_post_bind(struct udevice *bus)
-{
-	/*
-	 * Scan the device tree for devices
-	 *
-	 * Before relocation, only bind devices marked for pre-relocation
-	 * use.
-	 */
-	return dm_scan_fdt_dev(bus);
-}
-
 UCLASS_DRIVER(pch) = {
 	.id		= UCLASS_PCH,
 	.name		= "pch",
-	.post_bind	= pch_uclass_post_bind,
+	.post_bind	= dm_scan_fdt_dev,
 };