drivertest:add include file depended by cmocka

from the cmocka.h:
 * These headers or their equivalents MUST be included prior to including
 * this header file.
 * @code
 * #include <stdarg.h>
 * #include <stddef.h>
 * #include <stdint.h>
 * #include <setjmp.h>
 * @Endcode

Signed-off-by: dulibo1 <[email protected]>
Signed-off-by: buxiasen <[email protected]>

Author: dulibo1

testing/drivertest/drivertest_pm_runtime.c

@@ -28,8 +28,10 @@
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <setjmp.h>
 #include <string.h>
-#include <pthread.h>
 #include <cmocka.h>
 #include <nuttx/power/pm_runtime.h>
 

testing/drivertest/drivertest_regulator.c

@@ -28,8 +28,10 @@
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <setjmp.h>
 #include <string.h>
-#include <pthread.h>
 #include <cmocka.h>
 #include <nuttx/power/consumer.h>