[PATCH] dvb: Fix Mini DiSEqC bug

The bug was visible as a warning with gcc-3.4.4 (prerelease)

Message:
drivers/media/dvb/bt8xx/dst.c:1349: warning: initialization from
incompatible pointer type.

Signed-off-by: Manu Abraham <manu@kromtek.com>
Cc: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>