I have decide to start following Linksys' official repo for the mwlwifi drivers at https://github.com/kaloz/mwlwifi, and make pre-compiled packages, that can be installed on top of stable releases, so more people can test the latest version, without the hassle of upgrading the whole system. These drivers are used by the WRT AC series of routers (WRT1200AC, WRT1900AC, WRT1900ACS, WRT3200ACM, WRT32X).
Kernel modules only work on kernels compiled using exactly the same configuration. So, as long as those community builds use the stock 17.01.1 kernel, these packages should work; otherwise, opkg will fail about failed dependencies.
I have updated the driver to the latest release, just executing opkg install https://github.com/eduperez/mwlwifi/releases/download/3f21258/kmod-mwlwifi_4.4.61.10.3.4.0-20170421-3f21258-1_arm_cortex-a9_vfpv3.ipk should be enough.
And the link in your post leads me to the "bd62e37" commit. If you need a package for a specific commit, can provide it, sure. But either you post the wrong link, or I am getting lost somewhere. Could you please post just the commit id that you need?
Using username "root".
SSH-2 implementation OpenSSH 7.4
Authenticating with public key "imported-openssh-key"
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BusyBox v1.25.1 () built-in shell (ash)
LEDE Reboot 17.01.1
Security is enabled, and your IP address has been logged.
root@AC1900M:~# cd /tmp
root@AC1900M:/tmp# opkg install kmod-mwlwifi_4.4.61.10.3.4.0-20170421-bd62e37-1
_arm_cortex-a9_vfpv3.ipk
Upgrading kmod-mwlwifi on root from 4.4.61+10.3.2.0-20170110-1 to 4.4.61+10.3.4.0-20170421-bd62e37-1...
Configuring kmod-mwlwifi.
root@AC1900M:/tmp#