rtl8812au 4.3.8.12175.20140902+dfsg-0ubuntu2 ADT test failure with linux-hwe 4.8.0-37.39~16.04.2

[Andy Whitcroft]

Testing failed on:
    amd64: https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-xenial-canonical-kernel-team-unstable/xenial/amd64/r/rtl8812au/20170205_185315_5f17d@/log.gz

[Julio Lajara (ju2wheels)]

Can confirm, I have the same issue.

As a temporary fix (I couldnt find where CONFIG_COMPAT was defined in the 4.4 lts xenial kernel in 16.04.1), I added the following to the very top of /usr/src/rtl8812au-4.3.8.12175.20140902+dfsg/os_dep/linux/rtw_android.c :

```
# Note: This not a correct general purpose solution but for building on amd64 16.04.2 it works fine.

#ifdef CONFIG_COMPAT
#undef CONFIG_COMPAT
#endif

```

This allowed me to build the driver on amd64 16.04.2, followed by the following:

```
sudo dkms remove -m rtl8812au/4.3.8.12175.20140902+dfsg --all
sudo dkms install -m rtl8812au -v 4.3.8.12175.20140902+dfsg
sudo modprobe -r 8812au
sudo modprobe 8812au
# unplug/replug the usb device
sudo systemctl restart NetworkManager
```

The driver will now work with the 4.8 HWE kernel on 16.04.2 and so far the networking in general seems far more stable than with the xenial kernel.