media: i2c: st-vgxy61: add v4l2_fwnode ctrls parse and addition

Allow parsing of the v4l2_fwnode properties from the DT and addition
of those properties (such as orientation, rotation).

Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>