Fix minor goofage in previous doc updates:
* The ETM dummy driver name is "dummy" not "etm_dummy";
re-alphabetize.
* DCC trace message mode "charmsg" is a format type
(and what Linux needs)
git-svn-id: svn://svn.berlios.de/openocd/trunk@1976 b42882b7-edfa-0310-969c-e2dbd0fdcd60