Convert several sprintf() calls to sysfs_emit() in the sysfs show functions, as it is the preferred helper and prevents potential buffer overruns. No functional changes intended. Signed-off-by: Shi Hao <i.shihao.999@gmail.com> Reviewed-by: Andy Shevchenko <andy@kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>