fbdev: i810: use appopriate log interface dev_info

fbdev: i810: use appopriate log interface dev_info

There were many printk log interfaces which do no had
any KERN_INFO with them and they can be replaced with
dev_info which will allow better log level handling
making messages clear and manageable.

No functional changes to the driver behavior are introduced.
Only the logging method has been replaced as per modern
kernel coding guidelines.

Signed-off-by: Shi Hao <i.shihao.999@gmail.com>
Signed-off-by: Helge Deller <deller@gmx.de>