drivers: base: Convert to printk alias functions

The file mixes printk calls together with calls to pr_*().
Covert to printk alias functions to unify the code.

Signed-off-by: Matthias Brugger <mbrugger@suse.com>
Link: https://lore.kernel.org/r/20200608095217.21162-2-matthias.bgg@kernel.org


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