Merge changes from topic "emu_wifi_fixes" into pi-dev

* changes:
  Update SELinux rules to support emulator WiFi
  Build emulator images with emulator WiFi HAL
  Update makefiles for WiFi in Treble
  Fix SELinux settings for WiFi in Treble
  Add SELinux configuration for new DHCP programs
  Enable WiFi for arm, arm64 and x86_64
  Add support for WiFi in emulator