warp7: Define the name of a signed boot-script file

We need to know the name of a signed boot-script, its better to have a
separate variable for this then to simply append some fixed string to an
existing image name.

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Tested-by: Breno Lima <breno.lima@nxp.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
1 file changed