media: dvb: represent min/max/step/tolerance freqs in Hz

Right now, satellite frontend drivers specify frequencies in kHz,
while terrestrial/cable ones specify in Hz. That's confusing
for developers.

However, the main problem is that universal frontends capable
of handling both satellite and non-satelite delivery systems
are appearing. We end by needing to hack the drivers in
order to support such hybrid frontends.

So, convert everything to specify frontend frequencies in Hz.

Tested-by: Katsuhiro Suzuki <suzuki.katsuhiro@socionext.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
diff --git a/drivers/media/dvb-frontends/cx22700.c b/drivers/media/dvb-frontends/cx22700.c
index 9ffd2c7..9613801 100644
--- a/drivers/media/dvb-frontends/cx22700.c
+++ b/drivers/media/dvb-frontends/cx22700.c
@@ -412,9 +412,9 @@ static const struct dvb_frontend_ops cx22700_ops = {
 	.delsys = { SYS_DVBT },
 	.info = {
 		.name			= "Conexant CX22700 DVB-T",
-		.frequency_min		= 470000000,
-		.frequency_max		= 860000000,
-		.frequency_stepsize	= 166667,
+		.frequency_min_hz	= 470 * MHz,
+		.frequency_max_hz	= 860 * MHz,
+		.frequency_stepsize_hz	= 166667,
 		.caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
 		      FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
 		      FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 |