This was done by executing these command:
$ make kernel_oldconfig CONFIG_TARGET=subtarget
Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl>
Link: https://github.com/openwrt/openwrt/pull/17581
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
(cherry picked from commit 524e22b4c71366be86493ca3ee7a16ff92d52288)