media: si2168: add frequency data to frontend info

Minimum, maximum, and stepsize taken from Silicon Labs reference.

Signed-off-by: Brad Love <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/dvb-frontends/si2168.c

···
 	.delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_A},
 	.info = {
 		.name = "Silicon Labs Si2168",
-		.symbol_rate_min = 1000000,
-		.symbol_rate_max = 7200000,
+		.frequency_min_hz      =  48 * MHz,
+		.frequency_max_hz      = 870 * MHz,
+		.frequency_stepsize_hz = 62500,
+		.symbol_rate_min       = 1000000,
+		.symbol_rate_max       = 7200000,
 		.caps =	FE_CAN_FEC_1_2 |
 			FE_CAN_FEC_2_3 |
 			FE_CAN_FEC_3_4 |