For sysfs outputs, it's safer to use a new helper, sysfs_emit(),
instead of the raw sprintf() & co.  This patch replaces the open-code
with a new helper, sysfs_emit_at(), by passing the string offset.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20220801170108.26340-8-tiwai@suse.deSigned-off-by: Mark Brown <broonie@kernel.org>