dm: pci: Avoid a driver model build error with CONFIG_CMD_PCI_ENUM

This is not supported with driver model, so print a message instead of
generating a build error. Rescanning PCI is not yet implemented.

This function will be implemented later once some additional PCI driver
model improvements are merged. It was confirmed on the mailing list
that no one on the tegra side will miss this feature, so it is disabled
for tegra.

Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Stephen Warren <swarren@nvidia.com>
diff --git a/common/cmd_pci.c b/common/cmd_pci.c
index 802e433..2eafd5c 100644
--- a/common/cmd_pci.c
+++ b/common/cmd_pci.c
@@ -458,7 +458,11 @@
 		return pci_cfg_display(bdf, addr, size, value);
 #ifdef CONFIG_CMD_PCI_ENUM
 	case 'e':
+# ifdef CONFIG_DM_PCI
+		printf("This command is not yet supported with driver model\n");
+# else
 		pci_init();
+# endif
 		return 0;
 #endif
 	case 'n':		/* next */