[WIP] Implement panic screen for MDP5 and DPU panels

[Smankusors]

this commit implements a panic screen for MDP5 and DPU panels
https://www.phoronix.com/news/Linux-DRM-Panic-BSoD-Picture

to test it out, you need to enable the following configs first

CONFIG_DRM_PANIC
CONFIG_DRM_PANIC_DEBUG

# for qr code
CONFIG_RUST
CONFIG_DRM_PANIC_SCREEN_QR_CODE

then, try run this on the running device (as root)

# test user screen
echo -n user > /sys/module/drm/parameters/panic_screen
echo 1 > /sys/kernel/debug/dri/1/drm_panic_plane_0

# test kmsg screen
echo -n kmsg > /sys/module/drm/parameters/panic_screen
echo 1 > /sys/kernel/debug/dri/1/drm_panic_plane_0

# test qr_code screen
echo -n qr_code > /sys/module/drm/parameters/panic_screen
echo 1 > /sys/kernel/debug/dri/1/drm_panic_plane_0

[SzczurekYT]

fyi: there is an issue about this on the msm driver repo

[Smankusors]

fyi: there is an issue about this on the msm driver repo

ah I see, and it has been assigned too, so perhaps they should do it then, I have no deep knowledge about this stuff...