test vga_switcheroo patch for nouveau

**Instructions for testing the patch**
Apply the patch against the sources of the current kernel version:

apt-get source linux-image-$(uname -r)
cd linux-*
cp /usr/src/linux-headers-$(uname -r)/Module.symvers .
make oldconfig && make prepare && make scripts
wget http://lekensteyn.nl/files/nouveau-switcheroo-optimus.patch
patch -p1 < nouveau-switcheroo-optimus.patch
make M=drivers/gpu/drm/nouveau

Load module dependencies, unload old, load new:
sudo modprobe -v nouveau
sudo rmmod nouveau
sudo insmod drivers/gpu/drm/nouveau/nouveau.ko

Make the module work across reboots:
sudo cp drivers/gpu/drm/nouveau/nouveau.ko /lib/modules/$(uname -r)/kernel/drivers/gpu/drm/nouveau/
sudo update-initramfs -u

This won't persist between kernel upgrades, for that use DKMS
(or re-apply these instructions)