rtc: ds1343: use sysfs_emit() instead of sprintf()

Use sysfs_emit() instead of sprintf() in sysfs show callbacks
(ds1343_show_glitchfilter and ds1343_show_tricklecharger) to conform
to the recommended sysfs attribute formatting guidelines in
Documentation/filesystems/sysfs.rst.

Link: https://patch.msgid.link/20261029132339.925021-8-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>