[media] DIB0700: fix typo in dib0700_devices.c

Fix typo introduced in b4d6046e.

Spotted by Dr. David Alan Gilbert. Thanks for that.
Signed-off-by: Patrick Boettcher <pboettcher@kernellabs.com>
Cc: Dr. David Alan Gilbert <linux@treblig.org>
Cc: stable@kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/dvb/dvb-usb/dib0700_devices.c

@@ -2162,7 +2162,7 @@ struct dibx000_agc_config dib7090_agc_config[2] = {
 		.agc1_pt3       = 98,
 		.agc1_slope1    = 0,
 		.agc1_slope2    = 167,
-		.agc1_pt1       = 98,
+		.agc2_pt1       = 98,
 		.agc2_pt2       = 255,
 		.agc2_slope1    = 104,
 		.agc2_slope2    = 0,