Change OpenWRT's DHCP lease time to 2m am: 66676e274a am: e548975820 am: 63dbb13ebc am: 0cf6d39d56 am: 4e99f267e4

Original change: https://android-review.googlesource.com/c/platform/external/openwrt-prebuilts/+/2746573

Change-Id: I72dd675385ce91fc334febb226946d7172f17619
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>