tile PCI RC: include pci/pcie/Kconfig

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>

arch/tile/Kconfig

@@ -408,6 +408,8 @@ config TILE_PCI_IO
 
 source "drivers/pci/Kconfig"
 
+source "drivers/pci/pcie/Kconfig"
+
 config TILE_USB
 	tristate "Tilera USB host adapter support"
 	default y