fixup! Add main() for iovctl and hook iovctl into build
fixup! Implement interface to create SR-IOV Virtual Functions
fixup! fixup! Implement interface to create SR-IOV Virtual Functions
fixup! Allocate PCI I/O memory spaces for VFs
fixup! Add interface to destroy SR-IOV VFs
Merge branch 'phabric_D76' into iov

Conflicts:
	sys/dev/pci/pci_iov.c
	sys/dev/pci/pci_private.h
Merge branch 'phabric_D78' into iov

Conflicts:
	sys/dev/pci/pci_iov_private.h
Merge branch 'phabric_D79' into iov

Conflicts:
	sys/dev/pci/pci_iov_private.h
Merge branch 'phabric_D87' into iov
Use device_set_devclass() to for ppt devices

As suggested in https://phabric.freebsd.org/D76, switch to using
device_set_devclass() to force the ppt driver to attach to a VF
in preference to a host driver.