Route: Style fixes; No functional change
RadeonHD: Cleanup, new cards

* Fix some incorrect chip codenames
* Introduce a dual gpu flag
* Add some new chipsets and document
  the next generation of chips
RadeonHD: Fix endian bugs in atombios header

* Style is not correct, keep in mind
  that this header is 1:1 upstream code
* Linux kernel commit:
  f4a2596cecfcfce1e0ac1df5a1603f7bf392c122
* AMD does not license this stuff GPL