T14, T14s, X13, P14s AMD-based various issues.md

Discalamer: Some issues might be fixed or not relavant, so please consult the reference with understanding of time frame

following up a thread: https://forums.lenovo.com/t5/Other-Linux-Discussions/T14-T14s-X13-P14s-AMD-based-various-issues/m-p/5076798?page=1

Laptop suffering of these various issues are: T14, L14, E14, P14, X13, P14s.

1. T14 AMD battery drain in standby (Linux): https://forums.lenovo.com/t5/Other-Linux-Discussions/T14-AMD-battery-drain-in-standby-Linux/m-p/5037674?page=1
2. T14 AMD, kernel says ACPI Error: No handler for Region [ECSI]`: https://forums.lenovo.com/t5/Other-Linux-Discussions/T14-AMD-kernel-says-ACPI-Error-No-handler-for-Region-ECSI/m-p/5066588?page=1
3. T14s G1 (AMD) TSC clock unusable: https://forums.lenovo.com/t5/ThinkPad-T400-T500-and-newer-T-series-Laptops/T14s-G1-AMD-TSC-clock-unusable/m-p/5070296?page=1#5279740
4. [BIOS] T14 Long splash screen timeout: https://forums.lenovo.com/t5/Other-Linux-Discussions/BIOS-T14-Long-splash-screen-timeout/m-p/5071327?page=1#5284903
5. Lenovo T14 AMD - Isses with external screen when docked: https://forums.lenovo.com/t5/Ubuntu/Lenovo-T14-AMD-Isses-with-external-screen-when-docked/m-p/5048223?page=1#5314300
6. T14s webcam performance issues: https://forums.lenovo.com/t5/ThinkPad-T400-T500-and-newer-T-series-Laptops/Suggestions-welcome-for-improving-T14s-webcam-image-quality-on-Linux/m-p/5046892
7. [BIOS BUG] ThinkPad P14s AMD ( and other models ). Duplicate WMI GUID(s).: https://forums.lenovo.com/t5/Other-Linux-Discussions/BIOS-BUG-ThinkPad-P14s-AMD-and-other-models/m-p/5070745
8. Linux S0ix support on AMD platforms: https://forums.lenovo.com/t5/Other-Linux-Discussions/Linux-S0ix-support-on-AMD-platforms/m-p/5098254?page=1
9. T14 touchpad not working: https://forums.lenovo.com/t5/ThinkPad-T400-T500-and-newer-T-series-Laptops/T14-touchpad-not-working/m-p/5044853?page=6#5521333

Thanks! You're right, let's keep it.