Import Debian changes 2.4+dfsg-2

arm-trusted-firmware (2.4+dfsg-2) unstable; urgency=medium

  * Upload to unstable.

arm-trusted-firmware (2.4+dfsg-1) experimental; urgency=medium

  [ Vagrant Cascadian ]
  * debian/targets: Enable g12a target (Closes: #973255).
  * Enable Build-Profile pkg.arm-trusted-firmware.notools to disable
    building of arm-trusted-firmware-tools.
  * debian/targets: Enable sun50i_h6 target (Closes: #979179).

  [ Nicolas Boulenguez ]
  * Update debian/watch (Closes: #977803).
  * Delegate changelog renaming to debhelper (Closes: #977803).
  * Let dh_auto_build call sub-Makes (Closes: #977803).

  [ Vagrant Cascadian ]
  * arm-trusted-firmware: Update lintian overrides to use a glob. Thanks
    to Nicolas Boulenguez.  (Closes: #977803)
  * debian/control: Update Standards-Version to 4.5.1.