Comment 0 for bug 2037493

[Impact]
System can't enter suspend on AHCI mode,
the CPU FAN and System FAN is running, PSU LED is on.
When fail to enter suspend, remove ODD, the system can successfully enter suspend again.

[Fix]
Enable LPM on Alder Lake-P AHCI.

[Test Cases]
1. enabled AHCI on target machine.
2. boot with kernel applied fix.
3. suspend then check slp_s0_residency_usec
~~~
u@ubuntu:~$ sudo cat /sys/kernel/debug/pmc_core/slp_s0_residency_usec;sudo cat /sys/kernel/debug/pmc_core/package_cstate_show
4951200
Package C2 : 63571033
Package C3 : 6212
Package C6 : 5633477
Package C7 : 0
Package C8 : 0
Package C9 : 0
Package C10 : 5255561
u@ubuntu:~$ sudo rtcwake -m mem -s 10
rtcwake: assuming RTC uses UTC ...
rtcwake: wakeup from "mem" using /dev/rtc0 at Wed Jul 19 05:13:56 2023
u@ubuntu:~$ sudo cat /sys/kernel/debug/pmc_core/slp_s0_residency_usec;sudo cat /sys/kernel/debug/pmc_core/package_cstate_show
12965280
Package C2 : 75052691
Package C3 : 46989
Package C6 : 8108332
Package C7 : 0
Package C8 : 0
Package C9 : 0
Package C10 : 13628111
~~~

[where the issue could happen]
Medium, Intel promise there's no issue of ADL AHCI and
they will take responsibility after regression.
Intel also take LPM as POR so they will fix any issues.