Bug#903825: xserver-xorg-video-sunffb: sparc64 architecture is disabled

[Gregor Riepl <onitake@gmail.com>]

Package: xserver-xorg-video-sunffb
Version: 1:1.2.2-1
Severity: grave
Justification: renders package unusable

Dear Maintainer,

Debian has dropped support for the sparc (32-bit) architecture some time ago,
but a dedicated debian-ports team has started working on a sparc64 port.

Since this port is already very mature, it would make sense to bring back
some old packages that were only supported on sparc.
The Xorg sunffb driver is one of them.

Please add the "sparc64" to the list of build Architectures: in d/control, so
this package returns to the repositories.

I have verified that building on sparc64 works, but I haven't tested the
resulting driver yet.

Thank you!

-- System Information:
Debian Release: buster/sid
  APT prefers unreleased
  APT policy: (500, 'unreleased'), (500, 'unstable'), (50, 'experimental')
Architecture: sparc64

Kernel: Linux 4.16.0-2-sparc64
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8) (ignored: LC_ALL set to en_GB.UTF-8), LANGUAGE=en_GB:en (charmap=UTF-8) (ignored: LC_ALL set to en_GB.UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled