[molecules/*] move beaglebone dependent code to separate script files

scripts/mkloopcard_beaglebone_chroot_hook.sh

@@ -0,0 +1,23 @@
+#!/bin/sh
+# This script is executed inside the image chroot before packing up.
+# Architecture/platform specific code goes here, like kernel install
+# and configuration
+
+env-update
+. /etc/profile
+
+# enable sshd by default
+rc-update add sshd default
+
+# TODO: error out here when linux-beaglebone is there
+# "equo update" is done by inner_source_chroot_update script
+# which directive is appended by iso_build.sh script
+equo install sys-kernel/linux-beaglebone
+
+# setup root password to... root!
+echo root:root | chpasswd
+# cleaning up deps
+rc-update --update
+
+exit 0
+