thermal: Replace sprintf() with sysfs_emit() for sysfs show functions

thermal: Replace sprintf() with sysfs_emit() for sysfs show functions

Replace all sprintf() calls with sysfs_emit() and sysfs_emit_at() in
sysfs show functions.

sysfs_emit() and sysfs_emit_at() are preferred over sprintf() for
formatting sysfs output as they provide better bounds checking and
prevent potential buffer overflows.

Signed-off-by: Sumeet Pawnikar <sumeet4linux@gmail.com>
Link: https://patch.msgid.link/20260110092851.9078-1-sumeet4linux@gmail.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>