Allow to install board specific packages

We really want to switch to FAI at some point.

build-image

@@ -82,6 +82,7 @@ apt_sources=
 debootstrap_dist=
 kernel_deb=
 custom_package_opt=
+board_packages=
 
 while getopts ":hb:d:T:B" opt; do
   case ${opt} in
@@ -123,6 +124,7 @@ bootimg="${pureos_board}.img"
 [ -n "${debootstrap_dist}" ] || debootstrap_dist="${distro}"
 echo "Building ${bootimg} (board_type: ${board_type}, arch: ${arch}, build_type: ${build_type}, ci_pkgs: ${ci_pkgs}, ${debootstrap_dist})"
 echo "Installing extra packages ${packages}"
+echo "Installing extra board specific packages ${board_packages}"
 
 mkdir -p tmp/ files/
 echo -n > files/meta.yml
@@ -164,7 +166,7 @@ set -x
 # shellcheck disable=SC2086
 sudo pureos_board="${pureos_board}" \
      distro="${distro}" \
-     packages="${packages}" \
+     packages="${packages} ${board_packages}" \
      http_proxy="${http_apt_proxy:-${http_proxy:-}}" \
      https_proxy="${https_apt_proxy:-${https_proxy:-}}" \
      qemu="${qemu}" \