V4L/DVB (9147): af9015: Add USB ID for MSI DIGIVOX mini III

- Add USB ID for MSI DIGIVOX mini III (1462:8807)

Signed-off-by: Herbert Graeber <herbert@graeber-clan.de>
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>