RFIM and SAGV Linux Support for G10 models

[Hui Wang]

BugLink: https://bugs.launchpad.net/bugs/2070158

[Impact]
This is a feature request from HP, RFIM is for frequency, SAGV is for voltage.
They are used as dynamic switching to reduce RF noise. RFIM is already
supported in the kernel, this patchset adds the SAGV feature.

[Fix]
Cherry-pick 6 commits from mainline kernel

[Test]
Enable the SAGV from the BIOS, booting with the patched kernel, after booting
up, run 'systemctl status dtt.service', we will get: service is enabled and
service is running
run 'cat /sys/kernel/debug/dri/0000:00:02.0/i915_sagv_status', we will get:
SAGV available: Yes
SAGV status: enabled

[Where problems could occur]
Because the fix is for i915, it is likely introduce regression on graphic,
but this possibility is very low. These 6 commits are merged to
mainline kernel from v6.10-rc1, so far there is no regression reported
on them. And we tested the patched kernel on different Intel machines, all
worked well.

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-oem-6.5/6.5.0-1026.27 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux-oem-6.5' to 'verification-done-jammy-linux-oem-6.5'. If the problem still exists, change the tag 'verification-needed-jammy-linux-oem-6.5' to 'verification-failed-jammy-linux-oem-6.5'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!