misc: isl29003: Use sysfs_emit() to instead of sprintf()

Follow the advice of the Documentation/filesystems/sysfs.rst and show()
should only use sysfs_emit() or sysfs_emit_at() when formatting the
value to be returned to user space.

Signed-off-by: Bo Liu <liubo03@inspur.com>
Link: https://lore.kernel.org/r/20230129092357.3143-1-liubo03@inspur.com


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