Add Semaphore Chrono stubs

UNITTESTS/stubs/Semaphore_stub.cpp

@@ -53,11 +53,21 @@ bool Semaphore::try_acquire_for(uint32_t millisec)
     return Semaphore_stub::acquire_return_value;
 }
 
+bool Semaphore::try_acquire_for(Kernel::Clock::duration_u32 rel_time)
+{
+    return Semaphore_stub::acquire_return_value;
+}
+
 bool Semaphore::try_acquire_until(uint64_t millisec)
 {
     return Semaphore_stub::acquire_return_value;
 }
 
+bool Semaphore::try_acquire_until(Kernel::Clock::time_point abs_time)
+{
+    return Semaphore_stub::acquire_return_value;
+}
+
 osStatus Semaphore::release(void)
 {
     return 0;