Dawn

These changes will allow to build a bootable environment in the STB, installing the kernel modules, binaries and init scripts from the dawn sdk (added in the merge request to the dawn environment). They will also build QtTestBrowser adn MiniBrowser to test webkit, and build qt5base with support for the broadcom drivers (at least theoretically)

Once everything is built and deployed in the STB, launching QtTestBrowser or MiniBrowser will result in a kernel crash due to a problem with the video driver.

The next step is debugging that crash :)