Fix "hardware/intel/common/wrs_omxil_core/base/src/portbase.cpp:599:15: error: 'ETIMEDOUT' was not declared in this scope".

Change-Id: I856315bf82be5f523b3971f179dd23b362f97f96
diff --git a/base/src/portbase.cpp b/base/src/portbase.cpp
index e939960..efc90a2 100644
--- a/base/src/portbase.cpp
+++ b/base/src/portbase.cpp
@@ -16,6 +16,7 @@
  * limitations under the License.
  */
 
+#include <errno.h>
 #include <stdlib.h>
 #include <string.h>