configs: Enable the pre-load signature in tools-only_defconfig

pre-load related config options are enabled to have support of it in host
tools.

'CONFIG_FIT_SIGNATURE=y' is being automatically removed since it is
selected by CONFIG_IMAGE_PRE_LOAD_SIG.

Signed-off-by: Paul HENRYS <paul.henrys_ext@softathome.com>
1 file changed