hwstub_shell: add atj target

Change-Id: I566694f19dfb110dbf245be7b7f139a4c616e16b
Reviewed-on: http://gerrit.rockbox.org/1041
Reviewed-by: Amaury Pouly <amaury.pouly@gmail.com>
adfuload: fix argument parsing

Change-Id: Ibde77a2f7cb7a73c26235be5b2afed9f0aec3e97
Reviewed-on: http://gerrit.rockbox.org/1039
Reviewed-by: Amaury Pouly <amaury.pouly@gmail.com>