Comment 13 for bug 770679

Pull request: https://lists.ubuntu.com/archives/kernel-team/2011-May/015591.html

SRU Justification:

Impact: Owners of Beagle xM rev C (newer ones) can't boot with current Natty's kernel.

Fix: Detect the rev C revision and proper initialize it (like older xM).

Testcase: Boot the kernel with a Beagle xM rev C board. If you boot fine you'll also be able to see the detected revision at dmesg, like:
ubuntu at omap:~$ dmesg | grep Beagle
[ 0.000000] Machine: OMAP3 Beagle Board
[ 0.154510] OMAP3 Beagle Rev: xM C