linux-postmarketos-qcom-sm8250: upgrade to 6.17.0

Changes in kernel:

1. upgrade to 6.17.0
2. migrate kernel repository to https://gitlab.postmarketos.org/soc/qualcomm-sm8250/

Changes in device-xiaomi-elish:

1. use soc-qcom to replace qocm common dependencies.

Tests:

• xiaomi-elish(Xiaomi Pad 5 Pro) @CalcProgrammer1
• lenovo-q706f(Xiaoxin Pad Pro 12.6) @chalkin
• oneplus-instantnoodlep(Oneplus 8 Pro) @tomaszduda23