implemented gst_droidcamsrc_set_iso_speed
implemented gst_droidcamsrc_set_iso_speed

foolab/gst-droid,sledges/gst-droid,mlehtima/gst-droid,sailfishos/gst-droid,mlehtima/gst-droid,foolab/gst-droid,sledges/gst-droid,sledges/gst-droid