iwlegacy: Use standard #defines for PCIe Capability ASPM fields

Use the standard #defines rather than creating local definitions for
PCIe Capability ASPM fields.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Stanislaw Gruszka <sgruszka@redhat.com>

diff --cc drivers/net/wireless/iwlegacy/4965.h
Simple merge

diff --cc drivers/net/wireless/iwlegacy/common.c
Simple merge

diff --cc drivers/net/wireless/iwlegacy/common.h
Simple merge