This adds support for the i.MX Pixel Pipeline IP block
which is available on some imx6 flavours [1]
This allows to use hardware offloading for operations like:
- Colour conversion
- Scaling
- Rotation
[1] https://en.wikipedia.org/wiki/I.MX#i.MX_6_series
Signed-off-by: Koen Vandeputte <koen.vandeputte@citymesh.com>