tuna: Workaround for 4.2 simg2img move

Building simg2img from 4.2's system/extra tree isn't possible.
Use 4.1.2's simg2img for now
(Real fix will be to get 4.2's simg2img from its new location)

Change-Id: Ib141a512c919ff294f16953517a25947ce1f8319
Signed-off-by: Bernhard Rosenkraenzer <Bernhard.Rosenkranzer@linaro.org>
1 file changed