Add firmware image for strongbad kingoftown
Add firmware image for the HP Fortis 11 G9 Q Chromebook with codename kingoftown. The base board name is strongbad, which is based on trogdor. Replace the existing generic link to the firmware image for trogdor with a link for each trogdor variant in the lab, including kingoftown. Edit the build script to pick the right base firmware based on the Chromebook codename.
Signed-off-by: Laura Nao laura.nao@collabora.com