This fixes the collection of target info during build, where the
device title for rb532/nand is just empty:
tmp/.config-target.in:44925:warning: leading whitespace ignored
tmp/.config-target.in:123738:warning: leading whitespace ignored
tmp/.config-target.in:123786:warning: leading whitespace ignored
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
9ef53b93cb