PCI/sysfs: Use PCI resource accessor macros

PCI/sysfs: Use PCI resource accessor macros

Replace direct pdev->resource[] accesses with pci_resource_n(), and
pdev->resource[].flags accesses with pci_resource_flags().

No functional changes intended.

Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Tested-by: Shivaprasad G Bhat <sbhat@linux.ibm.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://patch.msgid.link/20260508043543.217179-2-kwilczynski@kernel.org