linux-postmarketos-qcom-msm8953: upgrade to 6.8.2-r0

Kernel changes:

• upgrade to 6.8.2
• arm64: dts: qcom: msm8953: xiaomi-daisy: fix backlight stripes
• arm64: dts: qcom: sdm450: Add device tree for Redmi 5 (xiaomi-rosy)
• OPP: Fix required-opps handling for devices with multiple power-domains

Tested community devices:

• xiaomi-daisy
• xiaomi-markw
• xiaomi-mido
• xiaomi-tissot
• xiaomi-vince
• xiaomi-ysl

Tested non-community devices:

• fairphone-fp3
• huawei-milan
• lenovo-kuntao
• motorola-ali
• motorola-ocean
• motorola-potter
• samsung-a6plte
• xiaomi-onclite
• xiaomi-rosy