BeagleBoardPkg/BeagleBoardPkg.dsc: Removing no more valid comment

EHCI support was working on the BeagleBoard after the coherency issue
in ArmPkg/DmaLib was fixed (svn rev12137).

Signed-off-by: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14135 6f19259b-4bc3-4df7-8a09-765794883524