Set correct attributes for 'device_type' file

Issues: MEN-2102

Changelog: None

Signed-off-by: Adam Podogrocki <a.podogrocki@gmail.com>

bbb-convert-stage-5.sh

@@ -122,6 +122,7 @@ build_grub_efi() {
      TARGET_RANLIB=${toolchain}-ranlib \
      --target=arm --with-platform=efi --exec-prefix=$grub_build \
      --prefix=$grub_build --disable-werror
+
   local cores=$(nproc)
   make --quiet -j$cores
   make --quiet install

convert-stage-4.sh

@@ -151,7 +151,7 @@ install_files() {
   sudo install -d -m 755 ${data_dir}/${dataconfdir}
   sudo install -d -m 755 ${data_dir}/${databootdir}
 
-  sudo install -m 0644 ${mender_dir}/device_type ${data_dir}/${dataconfdir}
+  sudo install -m 0444 ${mender_dir}/device_type ${data_dir}/${dataconfdir}
   sudo install -m 0644 ${mender_dir}/fw_env.config ${data_dir}/${databootdir}
 
   sudo ln -sf /data/${databootdir}/fw_env.config ${primary_dir}/etc/fw_env.config
@@ -275,6 +275,7 @@ do_install_mender() {
 
   # Get Mender client related files.
   get_mender_files_from_upstream
+
   # Create all necessary client's files.
   create_client_files