[media] rtl2832_sdr: fix Kconfig dependencies

MEDIA_SDR_SUPPORT and I2C_MUX are needed for rtl2832_sdr.
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

drivers/media/dvb-frontends/Kconfig

@@ -448,7 +448,7 @@ config DVB_RTL2832
 
 config DVB_RTL2832_SDR
 	tristate "Realtek RTL2832 SDR"
-	depends on DVB_CORE && I2C && VIDEO_V4L2
+	depends on DVB_CORE && I2C && I2C_MUX && VIDEO_V4L2 && MEDIA_SDR_SUPPORT
 	select DVB_RTL2832
 	select VIDEOBUF2_VMALLOC
 	default m if !MEDIA_SUBDRV_AUTOSELECT

drivers/media/usb/dvb-usb-v2/Kconfig

@@ -129,7 +129,7 @@ config DVB_USB_RTL28XXU
 	depends on DVB_USB_V2 && I2C_MUX
 	select DVB_RTL2830
 	select DVB_RTL2832
-	select DVB_RTL2832_SDR if MEDIA_SUBDRV_AUTOSELECT
+	select DVB_RTL2832_SDR if (MEDIA_SUBDRV_AUTOSELECT && MEDIA_SDR_SUPPORT)
 	select MEDIA_TUNER_QT1010 if MEDIA_SUBDRV_AUTOSELECT
 	select MEDIA_TUNER_MT2060 if MEDIA_SUBDRV_AUTOSELECT
 	select MEDIA_TUNER_MXL5005S if MEDIA_SUBDRV_AUTOSELECT