IVGCVSW-5022 Fix master intermittent failure by providing surge buffer capacity

Change-Id: I028aec48d89d7348836223029aa1e8c315f160fa
Signed-off-by: Jim Flynn <jim.flynn@arm.com>
diff --git a/src/profiling/BufferManager.hpp b/src/profiling/BufferManager.hpp
index f4e63da..4bc7725 100644
--- a/src/profiling/BufferManager.hpp
+++ b/src/profiling/BufferManager.hpp
@@ -51,7 +51,9 @@
     // Maximum buffer size
     unsigned int m_MaxBufferSize;
     // Number of buffers
-    unsigned int m_NumberOfBuffers;
+    const unsigned int m_NumberOfBuffers;
+    const unsigned int m_MaxNumberOfBuffers;
+    unsigned int m_CurrentNumberOfBuffers;
 
     // List of available packet buffers
     std::vector<IPacketBufferPtr> m_AvailableList;