Reserve v4l memory pool to minimize fragmentation in dma zone, see https://gitorious.org/utilite/utilite/commit/0387de9d580793ccda786a531d6136d7bcc4e614
https://github.com/wolfgar/utilite/commit/d11a440592c09ce5a637bad41d133f3e06
Merge branch 'wandboard_imx_3.0.35_4.1.0' into wandboard_imx_3.0.35_4.1.0_unicable