mrst_max3110: Change max missing message priority.

Change print message to notice instead of error to clean up
non critcal messages showing on startup. The MAX3111 not being present
is a normal path for end user systems.

Signed-off-by: William Douglas <william.douglas@intel.com>
[rebased on 3.0, switched to dev_dbg()]
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>