PCI: ibmphp: Make read-only arrays static

Don't populate the arrays on the stack; instead make them static const.

Link: https://lore.kernel.org/r/20230627125612.724764-1-colin.i.king@gmail.com


Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>