staging: exfat: replace printk(KERN_INFO ...) with pr_info()

Fix checkpatch.pl warning:

	WARNING: Prefer [subsystem eg: netdev]_info([subsystem]dev, ...
	then dev_info(dev, ... then pr_info(...  to printk(KERN_INFO ...

Signed-off-by: Roi Martin <jroi.martin@gmail.com>
Link: https://lore.kernel.org/r/20191030010328.10203-5-jroi.martin@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>