compat: backport PCI_EXP_LNKCTL_ASPM_L0S and PCI_EXP_LNKCTL_ASPM_L1

compat: backport PCI_EXP_LNKCTL_ASPM_L0S and PCI_EXP_LNKCTL_ASPM_L1

This backports the addition of two defines added by the
commit below.

commit 7508320678b7819ac6aeb89580b8622a424ce586
Author: Bjorn Helgaas <bhelgaas@google.com>
Date:   Wed Dec 5 13:51:19 2012 -0700

    PCI: Add standard PCIe Capability Link ASPM field names

    Add standard #defines for ASPM fields in PCI Express Link Capability and
    Link Control registers.

    Previously we used PCIE_LINK_STATE_L0S and PCIE_LINK_STATE_L1 directly, but
    these are defined for the Linux ASPM interfaces, e.g.,
    pci_disable_link_state(), and only coincidentally match the actual register
    bits.  PCIE_LINK_STATE_CLKPM, also part of that interface, does not match
    the register bit.

    Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
    Reviewed-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
    Acked-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>