Required for 900mhz devices to be supported due to band size.
This can also be useful for allowing more devices to fit into the same amount of RF space as nodes may often not need full 20mhz wide channels.
2.4ghz while using standard BBHN SSID is restricted to 20mhz for compatibility.
ref BBHN->ticket:50
Includes removing files that are provided by packages instead
of being embedded as binaries.
Changes made for UBNT hardware AND for newer base openwrt (Backfire)