Config recovery should be taken care by individual EP so, this
property is not needed for qps615 switch. Removing this property
from pcie0 instance.
DRV feature is not supported for qps615 switch so, removing this
property from pcie0 instance.
Adding back deleted properties to all board level overlay files.
Change-Id: Ibb1cf4200ca046583508a5ea1b3a9964923aa60b