[media] rtl2832: cleanups and minor changes

Remove all the stuff that is not needed anymore. Rename variable.
Remove extra new lines.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

diff --cc drivers/media/dvb-frontends/rtl2832.c
Simple merge

diff --cc drivers/media/dvb-frontends/rtl2832.h
Simple merge

diff --cc drivers/media/dvb-frontends/rtl2832_priv.h
Simple merge