r8169: Enable chip-specific ASPM regardless of PCIe ASPM status

r8169: Enable chip-specific ASPM regardless of PCIe ASPM status

BugLink: https://bugs.launchpad.net/bugs/1946433
To really enable ASPM on r8169 NICs, both standard PCIe ASPM and
chip-specific ASPM have to be enabled at the same time.

Since PCIe ASPM can be enabled or disabled vis sysfs and there's no
mechanism to notify driver about ASPM change, unconditionally enable
chip-specific ASPM to make ASPM really take into effect.

Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
(cherry picked from
https://patchwork.ozlabs.org/project/linux-pci/patch/20211007161552.272771-3-kai.heng.feng@canonical.com/)
Signed-off-by: Chia-Lin Kao (AceLan) <acelan.kao@canonical.com>
Signed-off-by: Andrea Righi <andrea.righi@canonical.com>