Staging: iio: fix printk(KERN_ERR .. in lis3l02dq_core.c

Fix checkpatch.pl issues with prefer netdev_err(netdev, .. then
dev_err(dev, .. then pr_err(.. to printk(KERN_ERR
in lis3l02dq_core.c

Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>