media: i2c: imx214: Convert to CCI register access helpers

[ Upstream commit 4f0aeba4 ]

Use the new common CCI register access helpers to replace the private
register access helpers in the imx214 driver. This simplifies the driver
by reducing the amount of code.

Acked-by: Ricardo Ribalda <ribalda@chromium.org>
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>