dm: pci: Move pci_bus_to_hose() to compatibility

This function should not be used by driver-model code, so move it to the
compatibility portion.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/drivers/pci/pci-uclass.c b/drivers/pci/pci-uclass.c
index 685df9d..6dd4883 100644
--- a/drivers/pci/pci-uclass.c
+++ b/drivers/pci/pci-uclass.c
@@ -22,7 +22,7 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-static int pci_get_bus(int busnum, struct udevice **busp)
+int pci_get_bus(int busnum, struct udevice **busp)
 {
 	int ret;
 
@@ -41,20 +41,6 @@
 	return ret;
 }
 
-struct pci_controller *pci_bus_to_hose(int busnum)
-{
-	struct udevice *bus;
-	int ret;
-
-	ret = pci_get_bus(busnum, &bus);
-	if (ret) {
-		debug("%s: Cannot get bus %d: ret=%d\n", __func__, busnum, ret);
-		return NULL;
-	}
-
-	return dev_get_uclass_priv(bus);
-}
-
 struct udevice *pci_get_controller(struct udevice *dev)
 {
 	while (device_is_on_pci_bus(dev))