Rebase our downstream patches and drop the one included in the release.
See https://gitlab.freedesktop.org/camera/libcamera/-/releases/v0.3.1
Notes:
- The abi-compliance checker reports 100% binary and source compatibility,
so this release does not change the SONAME.
- qcam has been ported to QT6.
- This release has some notable improvements to the PPP/rkisp1, however
lower frame rates might be encountered sometimes. This will hopefully
get fixed in the imx258 driver in Linux 6.11.
- The swISP got some fixes but nothing major apart from the patch we
were already carrying.
[ci:skip-build]: already built successfully in CI
c54777db04