[PATCH] dvb: frontends: misc. minor cleanups

misc. minor cleanups, select FW_LOADER and add a help text to DVB_OR51132

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