Bug#1005406: Fails to build for Linux 5.16 onward

[Ben Hutchings]

Source: nvidia-graphics-drivers-tesla-460
Version: 460.106.00-1
Severity: grave

These modules fail to build, with the compiler reporting that
<stddef.h> is not found.

This is due to an intentional change in Linux 5.16 removing user-space
headers from the kernel include path:
<https://git.kernel.org/linus/04e85bbf71c9072dcf0ad9a7150495d72461105c>.

Kernel code must use <linux/stddef.h> instead of <stddef.h>.

Ben.

-- System Information:
Debian Release: bookworm/sid
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'oldstable-updates'), (500, 'unstable'), (500, 'oldstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 5.15.0-3-amd64 (SMP w/2 CPU threads)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled