Bug#1107707: libdrm: /usr/share/doc/<package>/copyright is not in DEP-5 format

[Marc Leeman <marc.leeman@gmail.com>]

Source: libdrm
Version: 2.4.124-2
Severity: minor

Dear Maintainer,

While collecting an overview of the copyright information of the
packages installed on my system, I noticed that the file
`/usr/share/doc/libdrm/copyright` is not in the DEP-5 format. The file
currently contains a simple text format that leverage tools like
`licenserecon`.

A reference to the LICENSE file shows that it is MIT, but this SPDX
license identifier is not included in the copyright file [1].

[1] https://android.googlesource.com/platform/external/libdrm/+/refs/heads/main/LICENSE

-- System Information:
Debian Release: 13.0
  APT prefers bookworm
  APT policy: (500, 'bookworm'), (500, 'unstable'), (500, 'testing'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 6.12.30-amd64 (SMP w/22 CPU threads; PREEMPT)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled