Mark the package as nonshared to build it in the target specific build
step 1 of the build bots instead of the architecture generic build step
2. In the build step 2 it may be left out if we build it using a
different target.
Fixes: 8619d7af67c2 ("kirkwood: add D-Link DNS-320L support")
Link: https://github.com/openwrt/openwrt/pull/16031
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
9ac50c0aa3