thermal: intel: int340x: Replace sprintf() with sysfs_emit()

thermal: intel: int340x: Replace sprintf() with sysfs_emit()

Replace sprintf() calls with sysfs_emit() in sysfs "show" functions to
follow current kernel coding standards.

sysfs_emit() is the preferred method for formatting sysfs output as it
provides better bounds checking and is more secure.

Signed-off-by: Kaushlendra Kumar <kaushlendra.kumar@intel.com>
[ rjw: Subject adjustments, changelog edits ]
Link: https://patch.msgid.link/20251030053410.311656-1-kaushlendra.kumar@intel.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>