PCI: Add Kconfig PCI_IOV dependency for PCI_REALLOC_ENABLE_AUTO

Ensure only valid Kconfig configurations for PCI_REALLOC_ENABLE_AUTO. This
is done by selecting PCI_IOV, which is required by PCI_REALLOC_ENABLE_AUTO
to work.
Signed-off-by: Sascha El-Sharkawy <elscha@sse.uni-hildesheim.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

drivers/pci/Kconfig

@@ -42,13 +42,13 @@ config PCI_DEBUG
 config PCI_REALLOC_ENABLE_AUTO
 	bool "Enable PCI resource re-allocation detection"
 	depends on PCI
+	depends on PCI_IOV
 	help
 	  Say Y here if you want the PCI core to detect if PCI resource
 	  re-allocation needs to be enabled. You can always use pci=realloc=on
-          or pci=realloc=off to override it.  Note this feature is a no-op
-          unless PCI_IOV support is also enabled; in that case it will
-          automatically re-allocate PCI resources if SR-IOV BARs have not
-          been allocated by the BIOS.
+	  or pci=realloc=off to override it.  It will automatically
+	  re-allocate PCI resources if SR-IOV BARs have not been allocated by
+	  the BIOS.
 
 	  When in doubt, say N.