[media] dib8000: Fix ADC OFF settings

The ADC OFF values are wrong. This causes troubles on detecting
weak signals.
Acked-By: Patrick Boettcher <pboettcher@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

drivers/media/dvb-frontends/dib8000.c

@@ -588,8 +588,8 @@ static int dib8000_set_adc_state(struct dib8000_state *state, enum dibx000_adc_s
 		break;
 
 	case DIBX000_ADC_OFF:	// leave the VBG voltage on
-		reg_907 |= (1 << 14) | (1 << 13) | (1 << 12);
-		reg_908 |= (1 << 5) | (1 << 4) | (1 << 3) | (1 << 2);
+		reg_907 = (1 << 13) | (1 << 12);
+		reg_908 = (1 << 6) | (1 << 5) | (1 << 4) | (1 << 3) | (1 << 1);
 		break;
 
 	case DIBX000_VBG_ENABLE: