powerpc/PCI: Add struct pci_ops member names to initialization
powerpc/PCI: Add struct pci_ops member names to initialization

Some instances of pci_ops initialization rely on the read/write members'
location in the struct.  This is fragile and may break when adding new
members to the beginning of the struct.

No functional change.

Signed-off-by: Rob Herring <fbb37eacae100e13076d5c4b46f06cfa4d6fa9f8@kernel.org>
Signed-off-by: Bjorn Helgaas <f10ec01be0c6b54271af5c550cd257810bdf3268@google.com>
CC: Arnd Bergmann <f2c659f01951776204a6c5b902787d9019fbeebd@arndb.de>
CC: Benjamin Herrenschmidt <a7089bb6e7e92505d88aaff006cbdd60cc9120b6@kernel.crashing.org>
CC: Paul Mackerras <19a0ba370c443ba08d20b5061586430ab449ee8c@samba.org>
CC: Michael Ellerman <864f124608374e06e4da1fa5d2e47ed839b95411@ellerman.id.au>
CC: 624e0123bdcc7ea450e9efbcd399e8858e365d3e@lists.ozlabs.org
CC: a9b8716b557d191de9b5ff4fe0ccf005ad7f312e@lists.ozlabs.org
KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs