video: s3c2410: Use pr_* and dev_* instead of printk

printk calls are replaced by pr_* and dev_* calls to silence
checkpatch warnings.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>