dm: pci: Allow scan bridge child devices before relocation

On some platforms pci devices behind bridge need to be probed (eg:
a pci uart on recent x86 chipset) before relocation. Remove such
limitation so that dm pci can be used before relocation.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/pci/pci-uclass.c b/drivers/pci/pci-uclass.c
index c7d93f9..6262f35 100644
--- a/drivers/pci/pci-uclass.c
+++ b/drivers/pci/pci-uclass.c
@@ -641,10 +641,6 @@
 {
 	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)