media: i2c: imx214: Use subdev active state

[ Upstream commit b6832ff6 ]

Port the imx214 sensor driver to use the subdev active state.

Move all the format configuration to the subdevice state and simplify
the format handling, locking and initialization.

While at it, simplify imx214_start_streaming() by removing unneeded goto
statements and the corresponding error label.

Signed-off-by: André Apitzsch <git@apitzsch.eu>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Stable-dep-of: acc29451 ("media: i2c: imx214: Fix link frequency validation")
Signed-off-by: Sasha Levin <sashal@kernel.org>