platform/x86: intel-uncore-freq: Use sysfs_emit() to instead of scnprintf()

Replace the open-code with sysfs_emit() to simplify the code.
Signed-off-by: ye xingchen <ye.xingchen@zte.com.cn>
Link: https://lore.kernel.org/r/20220923063314.239146-1-ye.xingchen@zte.com.cnReviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

drivers/platform/x86/intel/uncore-frequency/uncore-frequency-common.c

@@ -113,7 +113,7 @@ show_uncore_perf_status(current_freq_khz);
 		struct uncore_data *data = container_of(attr, struct uncore_data,\
 							  member_name##_dev_attr);\
 									\
-		return scnprintf(buf, PAGE_SIZE, "%u\n",		\
+		return sysfs_emit(buf, "%u\n",				\
 				 data->member_name);			\
 	}								\