linux-postmarketos-msm89x7: Upgrade to v6.13.6-r0

This MR contains general rebase and first camera and more flash support.

Changes since v6.13-r1:

• ac80764 fixup! arm64: dts: qcom: xiaomi-prada: new device
• 87a251c HACK media: qcom: camss: fix VFE pm domain off
• 35830b3 fixup! arm64: dts: qcom: Add Xiaomi Redmi 4x device tree
• 9180920 arm64: dts: qcom: xiaomi-santoni: Enable flash
• 1ac120f arm64: dts: qcom: motorola-montana: Enable rear flash
• bb95965 fixup! arm64: dts: qcom: Add Motorola Moto G5S
• f5c9495 fixup! arm64: dts: qcom: xiaomi-prada: add flash
• 22f2fdf arm64: dts: qcom: xiaomi-prada: add front camera
• 88a5d15 arm64: dts: qcom: msm8937: motorola-hannah: enable front camera and flash leds
• efa2c85 arm64: dts: qcom: msm8937: xiaomi-land: enable cameras and flash led
• bbdddb7 arm64: dts: qcom: msm8937: Add camss mclk pinctrls
• b5fb4b2 WIP media: qcom: camss: Add MSM8937 resources
• 28042e6 media: i2c: s5k2xx: add initial s5k3p8sp support
• 5aabb6b media: i2c: s5k2xx:Add s5k3l8 support
• e5d9977 media: i2c: add s5k2xx camera sensor driver (v6)

soc-qcom-msm89x7:

• Add wireplumber config from soc-qcom