adt_installer: do not install rootfs if target is not selected
Currently, if YOCTOADT_TARGETS does not contain an architecture but the
rootfs/machine settings are uncommented, then the rootfs is installed
and adt will throw an error because is not able to find the toolchain
environment script.
This patch will:
* not allow to install a target rootfs if the toolchain for the
target architecture is not selected;
* uncomment the target rootfs/machine settings for the other
architectures since it's easier for the user to just add a new
architecture in YOCTOADT_TARGETS and have the target rootfs
installed;
[YOCTO #5727]
Signed-off-by: Laurentiu Palcu <laurentiu.palcu@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>