Intel(R) PRO/1000 I219 ethernet adapter [8086:550c] may block entrance of modern standby

[You-Sheng Yang]

[SRU Justification]

[Impact]

Systems with Intel(R) PRO/1000 I219 ethernet adapter [8086:550c] may block entrance of modern standby.

[Fix]

This is a composition of multiple factors. For the e1000e driver to suspend correctly, it takes:
* v6.12-rc1 commit [cedf233530cc3](https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=cedf233530cc375343c5a0b612fe94392f246c99) ("platform/x86: intel/pmc: Ignore all LTRs during suspend")
* v6.12-rc3 commit [9d9e5347b0354](https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9d9e5347b035412daa844f884b94a05bac94f864) ("e1000e: change I219 (19) devices to ADP")

And there is also a problem in APIC working in deadline mode. When shutting down the APIC timer, both APIC_LVT_MASKED and clear the counter register should be done, and this takes:
* https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?h=x86/urgent&id=ffd95846c6ec6cf1f93da411ea10d504036cab42 ("x86/apic: Always explicitly disarm TSC-deadline timer")

[Test Case]

```
$ sudo cat /sys/power/suspend_stats/total_hw_sleep
0
$ sudo rtcwake -m freeze -s 120
# wait ...
$ sudo cat /sys/power/suspend_stats/total_hw_sleep
117855416
$ sudo cat /sys/kernel/debug/pmc_core/package_cstate_show
...
Package C10 : 117924661
```

[Where problems could occur]

The first part can be treated as a new hardware support. The APIC timer part is a common issue probably tracing back to the Nehalem microm architecture. It has been landed to x86/urgent tree and will be in v6.12-rc4. It's also cc-stabled.

[Other Info]

This is cc-stabled. We're probably going to meet it again for maybe 6.8 LTS kernels. Before that, SRU for OEM-6.11 hardware enablement.

========== original bug report ==========

Proposed fixes from vendor:
* v6.12-rc1 commit cedf233530cc3 ("platform/x86: intel/pmc: Ignore all LTRs during suspend")
* v6.12-rc3 commit 9d9e5347b0354 ("e1000e: change I219 (19) devices to ADP")
* https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?h=x86/urgent&id=ffd95846c6ec6cf1f93da411ea10d504036cab42 ("x86/apic: Always explicitly disarm TSC-deadline timer")

80:1f.6 Ethernet controller [0200]: Intel Corporation Device [8086:550c] (rev 10)
        DeviceName: To Be Filled by O.E.M.
        Subsystem: Dell Device [1028:0d07]
        Kernel driver in use: e1000e
        Kernel modules: e1000e

[You-Sheng Yang (vicamo)]

SRU:
* https://kernel.ubuntu.com/gitea/kernel/noble-linux-oem/pulls/34 (oem-6.11)
* https://lists.ubuntu.com/archives/kernel-team/2024-October/154748.html (oracular)

[You-Sheng Yang (vicamo)]

While all the fixes are/will be in v6.12, mark plucky as FIXRELEASED.