Update to work with 6.8+ and 6.11 kernels

[Kiboneu]

The drm calling convention has changed a bit.

fbdev_generic has been renamed to fbdev_ttm since 6.11-rc1: https://github.com/torvalds/linux/commit/aae4682e5d66c1e1dc181fa341652e037237f144

And a format conversion state needs to be passed to drm_fb_xrgb8888_to_gray8 since 6.8-rc1: https://github.com/torvalds/linux/commit/4cd24d4b1a9548f42cdb7f449edc6f869a8ae730

works for now, barely tested so far. I'm not 100% sure if I'm using drm_format_conv_state correctly / efficiently.

Should fix https://github.com/ardangelo/sharp-drm-driver/issues/14.

[ardangelo]

Thanks for your work, I am testing it out now.

[fominok]

for anyone looking: sudo apt install linux-headers-rpi-v8 as for newer kernels raspberrypi-kernel-headers is no more (and in case you're running x64)

[scruss]

Thanks for your work, I am testing it out now.

can you merge and accept, please? sqfmi beepy modules are broken currently

[michaelriedl]

can you merge and accept, please? sqfmi beepy modules are broken currently

This would be a nice quality of life upgrade. I would like this to be merged as well.

[ZoltXs]

Update your driver to version 6.12.25. The tests I did were feasible, but I couldn't do more testing because my Beepy burned out due to a faulty battery and I haven't repaired it yet. But if Andrew wants to try it and update the repository, here's the link: https://github.com/ZoltXs/sharp-drm-driver2. I tested it on Trixie.