[media] dvb-frontends: Make all DVB Frontends visible if COMPILE_TEST=y

Make the DVB Frontends menu visible when compile-testing, to allow
selecting additional drivers on top of the drivers that are already
automatically selected if MEDIA_SUBDRV_AUTOSELECT is enabled.

Without this, many drivers stay disabled during e.g. allmodconfig.
Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/media/dvb-frontends/Kconfig

 menu "Customise DVB Frontends"
-	visible if !MEDIA_SUBDRV_AUTOSELECT
+	visible if !MEDIA_SUBDRV_AUTOSELECT || COMPILE_TEST
 
 comment "Multistandard (satellite) frontends"
 	depends on DVB_CORE