Enable PCI resource re-allocation detection

configname: CONFIG_PCI_REALLOC_ENABLE_AUTO

Linux Kernel Configuration
└─>Device Drivers
└─>PCI support
└─>Enable PCI resource re-allocation detection
In linux kernel since version 3.10 (release Date: 2013-06-30)  
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. It will automatically
re-allocate PCI resources if SR-IOV BARs have not been allocated by
the BIOS.

When in doubt, say N.