security/heaan: fix build on GCC architectures

Patch created manually, because WRKSRC differs.
Add include sys/time.h:
In file included from ../src/TestScheme.cpp:20:
../src/TimeUtils.h:20:17: error: field 'startTime' has incomplete type 'timeval'
   20 |  struct timeval startTime, stopTime;
      |                 ^~~~~~~~~

MFH:		2020Q4 (fix build blanket)

security/heaan/files/patch-TimeUtils.h

@@ -0,0 +1,10 @@
+--- ../src/TimeUtils.h.orig	2020-10-12 09:20:15.992285000 +0200
++++ ../src/TimeUtils.h	2020-10-12 09:20:25.674915000 +0200
+@@ -8,6 +8,7 @@
+ #ifndef HEAAN_TIMEUTILS_H_
+ #define HEAAN_TIMEUTILS_H_
+ 
++#include <sys/time.h>
+ #include <iostream>
+ 
+ struct timeval;