staging: bcm: use pr_info and pr_err rather than printk

Convert printk(KERN_INFO to pr_info( and printk(KERN_ERR to pr_err(.

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Acked-by: Kevin McKinney <klmckinney1@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>