[PATCH] video/tuner: fix tuner->freq updating

In VIDIOC_S_FREQUENCY command in tuner-core.c, t->freq is set to a new
value before calling set_freq().  This is not necessary, as set_freq() sets
t->freq itself.  Moreover, it causes problems with Philips tuners, as they
need to take into consideration difference between previous and new
frequency.

Signed-off-by: Jiri Benc <jbenc@suse.cz>
Cc: Gerd Knorr <kraxel@bytesex.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>