PCI: Simplify bool comparisons

Take care about Coccinelle warnings:

  drivers/pci/pci.c:6008:6-12: WARNING: Comparison to bool
  drivers/pci/pci.c:6024:7-13: WARNING: Comparison to bool

No change to functionality intended.

Link: https://lore.kernel.org/r/20200925224555.1752460-1-kw@linux.com


Signed-off-by: Krzysztof Wilczyński <kw@linux.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>