Add dt-bindings for Imagination E5010 JPEG Encoder [1] which is implemented
as stateful V4L2 M2M driver.

The device supports baseline encoding with two different quantization
tables and compression ratio as demanded.

Minimum resolution supported is 64x64 and Maximum resolution supported is
8192x8192.

Link: https://www.ti.com/lit/pdf/spruj16 [1] (Section 7.6 JPEG Encoder)
Co-developed-by: David Huang <d-huang@ti.com>
Signed-off-by: David Huang <d-huang@ti.com>
Signed-off-by: Devarsh Thakkar <devarsht@ti.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sebastian Fricke <sebastian.fricke@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>