Revert "dm: pci: Allow scan bridge child devices before relocation"

This reverts commit df189d9ba3.

Unfortunately this commit breaks chromebook_link because it adds lots of PCI devices
before relocation and there is not enough pre-reloc malloc() memory.

Rathar then increase this memory, revert for now until we figure this out.

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

drivers/pci/pci-uclass.c

@@ -717,6 +717,10 @@ static int pci_uclass_post_probe(struct udevice *bus)
 {
 	int ret;
 
+	/* Don't scan buses before relocation */
+	if (!(gd->flags & GD_FLG_RELOC))
+		return 0;
+
 	debug("%s: probing bus %d\n", __func__, bus->seq);
 	ret = pci_bind_bus_devices(bus);
 	if (ret)