Bonding (or trunking) is used for either fail-over or load-balancing, but load-balancing refers to:
1.- Two ISP connections, or
2.- Inter-servers connections
In order to do this, you have two options:
1.- Enabling the kernel bonding module, install ifenslave and properly configure /etc/network/interfaces
2.- Install iproute and run a script as per Load Balance your traffic with a script for linux | Linux Operating System - Debian, Ubuntu, Fedora, Gentoo, Arch
So yeah, linux can do that, question is: what about your router?
Anyway, your question makes no sense for me. If you want to increase performance just for the local part, then use a wired giga-eth instead.