ACPI: bgrt: Use sysfs_emit

sysfs_emit is preferred to snprintf for emitting values after
commit 2efc459d ("sysfs: Add sysfs_emit and sysfs_emit_at to format
sysfs output").
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/acpi/bgrt.c

@@ -19,7 +19,7 @@ static struct kobject *bgrt_kobj;
 	static ssize_t _name##_show(struct kobject *kobj,			\
 				    struct kobj_attribute *attr, char *buf)	\
 	{									\
-		return snprintf(buf, PAGE_SIZE, "%d\n", bgrt_tab._member);	\
+		return sysfs_emit(buf, "%d\n", bgrt_tab._member);		\
 	}									\
 	struct kobj_attribute bgrt_attr_##_name = __ATTR_RO(_name)