fmtools: Switch to 2.x series

Specifically, bump version to 2.0.1.
The 2.x series uses the V4L2 API instead of V4L.

Signed-Off-By: Maarten ter Huurne <maarten@treewalker.org>
Acked-By: Paul Cercueil <paul@crapouillou.net>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>