PCI: Reorder pci_dev fields to reduce holes

Group some bitfield variables to reduce holes.  On x86_64, this shrinks the
size of 'struct pci_dev' by 16 bytes (from 3576 to 3560) when compiled with
'allmodconfig'.

Link: https://lore.kernel.org/r/407b17c3e56764ef2c558898d4ff4c6c04b2d757.1687105455.git.christophe.jaillet@wanadoo.fr


Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>