[device-port] [gtaxlwifi] Galaxy tab a 2016 Wifi

[antoine62]

Tree:

• [x] Built kernel
• [x] Device boots into rootfs, usb: Manufacturer: GNU/Linux Device appears in dmesg on host.
• [x] LXC container starts and does not crash
• [ ] libhybris tests
  • [ ] test_gps
  • [x] test_hwcomposer
  • [x] test_wifi
  • [x] test_sensors
  • [ ] test_audio
  • [ ] test_camera
  • [x] test_input
  • [ ] test_recorder

Based on valera treble port. https://github.com/antoine62/android_kernel_samsung_exynos7870