[PATCH] dvb: dvb_frontend: fix module param

Remove incorrect "dvb_"-prefix from parameter description.  Error detected
with section2text.rb, see autoparam patch.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>