Determine VPD size in pci_vpd_init().

Quirks set dev->vpd.len to a non-zero value, so they cause us to skip the
dynamic size calculation.  Prerequisite is that we move the quirks from
FINAL to HEADER so they are run before pci_vpd_init().

Link: https://lore.kernel.org/r/cc4a6538-557a-294d-4f94-e6d1d3c91589@gmail.comSigned-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>