V4L/DVB (10675): soc-camera: extend soc_camera_bus_param_compatible with more tests

Add data signal polarity, mode, and bus-width tests to
soc_camera_bus_param_compatible().

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>