v1.16.0

This is a major update to Buildroot 2021.05. Please review the Buildroot release
notification below in addition to the following.

1. The wpa_supplicant options in Buildroot changed. If you're using
   vintage_net_wifi, you'll need to make sure that the control interface is
   enabled now. Add the following to your nerves_defconfig:

   BR2_PACKAGE_WPA_SUPPLICANT_CTRL_IFACE=y
   

• Package updates

  • Buildroot 2021.05
  • Erlang/OTP 24.0.2
  • Broadcom WiFi firmware for Raspberry Pis 1:20190114-1+rpt11. Despite the
    version number, this is the latest from Raspberry Pi OS.

• Improvements

  • Build Nerves on RISC-V platforms. RISC-V is not officially supported, but
    experiments are ongoing as low cost hardware becomes available.