xserver-xf86-config: add config for beaglebone

Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
beaglebone: switch to xf86-video-modesetting

Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
linux-mainline 3.8: add support for MPU6050

Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
contrib: bone-flash-tool: mount improvements

Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>