Various USB Debug Port fixes (trivial).

Various USB Debug Port fixes (trivial).

 - Drop unused DBGP_DEFAULT #defines on boards with chipsets where no
   USB Debug Port support is implemented anyway (at the moment, at least):

    - hp/dl145_g3
    - hp/dl165_g6_fam10

 - ICH7: Move unrelated code out of set_debug_port(). All ICH southbridges
   with Debug Port hardcode the physical USB port used as Debug Port to 1.
   In other words, this port is not user-configurable (as seems to be
   the case on NVIDIA MCP55). For now we keep the 'port' parameter in order
   to not change the API, this might be fixed differently later.

Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5842 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1