- split python36-buildfix.patch into two patches python36-buildfix1.patch
and python36-buildfix2.patch; apply the latter only on sle15-sp6/Leap 15.6
since on newer python releases than 3.6 it changes behaviour to
remove required=True option

- python36-buildfix.patch
* src/freedreno/registers/gen_header.py: hopefully fixes aarch64
build

- u_0001-intel-genxml-Drop-from-__future__-import-annotations.patch
u_0002-intel-genxml-Add-a-untyped-OrderedDict-fallback-for-.patch
python36-buildfix.patch
* fixes build against python 3.6

- let Mesa-dri require libvulkan1 to get zink/swrast driver
fallbacks working (hopefully); probably related:
https://gitlab.freedesktop.org/mesa/mesa/-/commit/2a71f06f2938678d89d5ed1372cda6a7b55d964d

- Update to bugfix release 23.3.3
--> https://docs.mesa3d.org/relnotes/23.3.3.html

- Update to bugfix release 23.3.2
--> https://docs.mesa3d.org/relnotes/23.3.2.html

- Update to version 23.3.0:
* It includes NVK, a new reverse-engineered Vulkan driver for
Nvidia hardware. This driver is still in experimental phase,
not quite ready for prime time yet, but adventurous users can
give it a go!
* New extensions & features (in no particular order):
- VK_EXT_pipeline_robustness on ANV
- VK_KHR_maintenance5 on RADV
- OpenGL ES 3.1 on Asahi
- GL_ARB_compute_shader on Asahi
- GL_ARB_shader_atomic_counters on Asahi
- GL_ARB_shader_image_load_store on Asahi
- GL_ARB_shader_image_size on Asahi
- GL_ARB_shader_storage_buffer_object on Asahi
- GL_ARB_sample_shading on Asahi
- GL_OES_sample_variables on Asahi
- GL_OES_shader_multisample_interpolation on Asahi
- GL_OES_gpu_shader5 on Asahi
- EGL_ANDROID_blob_cache works when disk caching is disabled
- VK_KHR_cooperative_matrix on RADV/GFX11+
- Drop patches fixed upstream:
* U_clover-llvm-move-to-modern-pass-manager.patch
* U_radeonsi-prefix-function-with-si_-to-prevent-name-co.patch
- Refresh patches with quilt.
- Use %patch -p N instead of deprecated %patchN.

- enable rusticl on sle15-sp6