media: i2c: imx412: Add missing newline to prints

Add trailing \n to dev_dbg and dev_err prints where missing.

Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
Fixes: 9214e86c ("media: i2c: Add imx412 camera sensor driver")
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>