tvheadend: Disable dvbscan

dvbscan is fetching sources during configure, disable this for now,
if this feature is needed then adding it to SRC_URI would be needed

Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-multimedia/recipes-dvb/tvheadend/tvheadend_git.bb

@@ -23,6 +23,7 @@ EXTRA_OECONF += "--arch=${TARGET_ARCH} \
                  --disable-ffmpeg_static \
                  --disable-libav \
                  --python=python3 \
+                 --disable-dvbscan \
                  "
 
 CLEANBROKEN = "1"