testing/device-postmarketos-trailblazer: T14s Gen6 Snapdragon support

Extend existing X1 Elite support with the modules needed to bring up the Lenovo Thinkpad T14s Gen6. Since most of the firmware has been upstreamed to linux-firmware, the yoinker is not required. Tested with full disk encryption, unl0kr works as expected.

Things which now work:

• Bluetooth
• CPU frequency scalling
• external display untested, tested with a thinkpad usb c hub and a noname usb hub

As for functionality, the main pain points are:

• Audio (Profile, can play sounds, but will overheat the speakers)
• USB OTG - the ports are dual role capable but all forced to host mode for some reason. If you do change the first port to peripheral then you'll get the normal USB network device show up if you attach it to your PC.

Details can be found here in the T14s wiki

Can be tested like this

 pmbootstrap init && pmbootstrap install --disk /dev/sda --add gptfdisk,unl0kr,mount

and installed to the device by replacing sda with the internal nvme drive. Backup before