misc: rtsx: Use standard PCI definitions

When reading registers defined by the PCIe spec, use the names already
defined by the PCI core.  This makes maintenance of the PCI core and
drivers easier.  No functional change intended.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20200721212336.1159079-6-helgaas@kernel.org


[ additional replacements due to changes in my tree - gregkh ]
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>