SR-IOV BARs can be specified via EA entries.  Extend the EA parser to
extract the SRIOV BAR resources, and modify sriov_init() to use resources
previously obtained via EA.
Signed-off-by: NDavid Daney <david.daney@cavium.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
Acked-by: NSean O. Stalley <sean.stalley@intel.com>