memory: bt1-l2-ctl: replace scnprintf() with sysfs_emit()

Documentation/filesystems/sysfs.rst mentions that show() should only
use sysfs_emit() or sysfs_emit_at() when formating the value to be
returned to user space. So replace scnprintf() with sysfs_emit().

Signed-off-by: Salah Triki <[email protected]>
Link: https://lore.kernel.org/r/aBkw_p9GkH2fm2UJ@pc
Signed-off-by: Krzysztof Kozlowski <[email protected]>

Author: salah-triki

drivers/memory/bt1-l2-ctl.c

@@ -222,7 +222,7 @@ static ssize_t l2_ctl_latency_show(struct device *dev,
 	if (ret)
 		return ret;
 
-	return scnprintf(buf, PAGE_SIZE, "%u\n", data);
+	return sysfs_emit(buf, "%u\n", data);
 }
 
 static ssize_t l2_ctl_latency_store(struct device *dev,