V4L/DVB (11982): Add keymaps for TeVii and TBS USB DVB-S/S2 cards

Add keymaps for TeVii and TBS USB DVB-S/S2 cards
Also module parameter named keymap inserted for override default keymap.

Signed-off-by: Igor M. Liplianin <liplianin@me.by>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>