Include Device Tree model in reportbug script

It would be nice to include the Device Tree model in the reportbug
output.  On DT based platforms, /proc/cpuinfo only includes quite
generic information.

Please note that the strange "echo ... $(cat ..)" construct is
intentional.  'cat /proc/device-tree/model' leads to a strange
character at the end because there's no newline and using echo
gets rid of it.

debian/changelog

@@ -149,6 +149,9 @@ linux (4.3.5-1) UNRELEASED; urgency=medium
     (Closes: #812336)
   * [s390x] udeb: include btrfs-modules (Closes: #812340)
 
+  [ Martin Michlmayr ]
+  * Include Device Tree model in reportbug script
+
  -- Ben Hutchings <ben@decadent.org.uk>  Sat, 23 Jan 2016 11:51:46 +0000
 
 linux (4.3.3-7) unstable; urgency=medium

debian/templates/image.plain.bug/include-model

@@ -39,6 +39,11 @@ grep_model() {
     false
     ;;
   esac
+
+  # Device Tree model
+  if [ -r /proc/device-tree/model ]; then
+    echo "Device Tree model:" $(cat /proc/device-tree/model)
+  fi
 }
 
 add_model() {