drivers: pci: Fix dm_pci_map_bar() to support 64b BARs

This enables 64b BARs if CONFIG_SYS_PCI_64BIT is enabled.

Reviewed-by: Philip Oberfichtner <pro@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Moritz Fischer <moritzf@google.com>
diff --git a/include/pci.h b/include/pci.h
index 2f5eb30..aad2337 100644
--- a/include/pci.h
+++ b/include/pci.h
@@ -1354,6 +1354,7 @@
  * type 1 functions.
  * Can also be used on type 0 functions that support Enhanced Allocation for
  * 32b/64b BARs.  Note that duplicate BEI entries are not supported.
+ * Can also be used on 64b bars on type 0 functions.
  *
  * @dev:	Device to check
  * @bar:	Bar register offset (PCI_BASE_ADDRESS_...)