3.13: add working 3.13-rc6 (audio patches disabled as screen shakes)

Signed-off-by: Robert Nelson <robertcnelson@gmail.com>
3.13: update to v3.13-rc7

Signed-off-by: Robert Nelson <robertcnelson@gmail.com>
3.13: update to v3.13-rc8 and fix hdmi output with xorg

Signed-off-by: Robert Nelson <robertcnelson@gmail.com>
3.13: update to v3.13.1

Signed-off-by: Robert Nelson <robertcnelson@gmail.com>
Merge pull request #3 from beagleboard/3.13

3.13 update from parent repo