staging: media: lirc: Use pr_* instead of printk

This patch focuses on fixing the following warning generated by
checkpatch.pl for the file lirc_sasem.c:
WARNING: Prefer [subsystem eg: netdev]_info([subsystem]dev, ... then
dev_info(dev, ... then pr_info(...  to printk(KERN_INFO ...
WARNING: Prefer [subsystem eg: netdev]_cont([subsystem]dev, ... then
dev_cont(dev, ... then pr_cont(...  to printk(KERN_CONT ...

Signed-off-by: Aybuke Ozdemir <aybuke.147@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>