Add std::this_thread::yield to Burst NN polling loop

Bug: N/A
Test: mma
Change-Id: Ibda55cfd031161614acc0c137cefb3b445548cc5
diff --git a/neuralnetworks/1.2/utils/src/ExecutionBurstUtils.cpp b/neuralnetworks/1.2/utils/src/ExecutionBurstUtils.cpp
index ca3a52c..1bdde1e 100644
--- a/neuralnetworks/1.2/utils/src/ExecutionBurstUtils.cpp
+++ b/neuralnetworks/1.2/utils/src/ExecutionBurstUtils.cpp
@@ -520,6 +520,8 @@
             }
             return packet;
         }
+
+        std::this_thread::yield();
     }
 
     // If we get to this point, we either stopped polling because it was taking too long or polling
@@ -665,6 +667,8 @@
             }
             return packet;
         }
+
+        std::this_thread::yield();
     }
 
     // If we get to this point, we either stopped polling because it was taking too long or polling