staging: most: core: use dev_* function for logging

This patch replaces all calls to pr_* functions and uses
the dev_* functions instead.

Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Link: https://lore.kernel.org/r/1579017478-3339-3-git-send-email-christian.gromm@microchip.com


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