i2c: i801: Don't break user-visible strings

It makes more difficult to grep these error prints from sources if they are
split to multiple source lines.

Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>