Add targets that are meant to be used after defconfig,
to apply configs from <arch>/configs/override on top of defconfigs.
Signed-off-by: Janusz Jankowski <janusz.jankowski@linux.intel.com>
CMake regeneration condition should depend on directory to automatically
update when new defconfigs are added.
Signed-off-by: Janusz Jankowski <janusz.jankowski@linux.intel.com>