Extend IP address range for DHCP at OpenWRT am: e6b4279815 am: 8766892902

Original change: https://android-review.googlesource.com/c/platform/external/openwrt-prebuilts/+/2952927

Change-Id: I8331e73139e03a9219fd938ef77c6d40fb7971d3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>