[][openwrt][common][crypto][Change strongswan package dependency]

[Description]
Change strongswan package dependency.
Strongswan-default depends on key derivation function module after
strongswan upgrade to v5.9.11. And since crypto-eip driver depends
on strongswan-default. The driver won't be build in default. So let
strongswan-default to select strongswan-mod-kdf directly.

[Release-log]
N/A


Change-Id: I433853129bfb14b612ba0e734c3be014f18b0706
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/8258764
1 file changed