New System Reference Manual Available

We are now up to revision 6 on the System Reference Manual available
from http://www.beagleboard.org/uploads/BBSRM_6.pdf.

Documentation for each of the key devices on Beagle is referenced from
http://beagleboard.org/resources. This now includes the TPS65950 full
technical reference manual (which is functionally compatible with the
TWL4030).