fix: los_swtmr.h不满足自包含要求对los_config.h存在依赖，但未包含los_config.h

close: #I40DHM
Signed-off-by: Nzff <zhangfanfan2@huawei.com>
Change-Id: I6903d2ece13ab0a4aadbc65f737c5f5a0f0a357a

kernel/include/los_swtmr.h

@@ -37,6 +37,7 @@
 #ifndef _LOS_SWTMR_H
 #define _LOS_SWTMR_H
 
+#include "los_config.h"
 #include "los_sortlink.h"
 
 #ifdef __cplusplus

kernel/src/los_swtmr.c

@@ -28,10 +28,10 @@
  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
-#include "los_config.h"
+
+#include "los_swtmr.h"
 #include "securec.h"
 #include "los_interrupt.h"
-#include "los_swtmr.h"
 #include "los_task.h"
 #include "los_memory.h"
 #include "los_queue.h"