[media] ts2020: use customise option correctly

The Kconfig entry for "TS2020 based tuners" defaults to modular if
DVB_FE_CUSTOMISE is set. But that Kconfig symbol was replaced with
MEDIA_SUBDRV_AUTOSELECT as of v3.7. So use the new symbol. And negate
the logic, so we are in line with all the similar entries in this file.
Signed-off-by: NPaul Bolle <pebolle@tiscali.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/dvb-frontends/Kconfig

@@ -210,7 +210,7 @@ config DVB_SI21XX
 config DVB_TS2020
 	tristate "Montage Tehnology TS2020 based tuners"
 	depends on DVB_CORE && I2C
-	default m if DVB_FE_CUSTOMISE
+	default m if !MEDIA_SUBDRV_AUTOSELECT
 	help
 	  A DVB-S/S2 silicon tuner. Say Y when you want to support this tuner.