staging: bcm2835-audio: bcm2835.h: fix printk coding style issue

Fix checkpatch.pl warning of the form "WARNING: Prefer
subsystem eg: netdev]_info([subsystem]dev, ...
then dev_info(dev, ... then pr_info(...  to printk(KERN_INFO ..."

Signed-off-by: Nathan Howard <adanhawthorn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>