Support for 04f3:0c7c
Seems to work perfectly with instructions in @abhishekmj303's reply and adding PID to elanmoc2.h
with the line:
{.vid = ELANMOC_VEND_ID, .pid = 0x0c7c, .driver_data = ELANMOC_ALL_DEV},
, e.g. with this patch file libfprint-elanmoc2-add-0c7c.patch.