Fixing for CUDA 11.2

src/memory/CudaMemory.cuh

@@ -222,7 +222,7 @@ public:
 	 * \return true if they are the same
 	 *
 	 */
-	static bool isDeviceHostSame()
+	constexpr static bool isDeviceHostSame()
 	{
 		return false;
 	}

src/memory/ExtPreAlloc.hpp

@@ -89,7 +89,7 @@ public:
 		mem->deviceToDevice(ptr,start,stop,offset);
 	}
 
-	static bool isDeviceHostSame()
+	constexpr static bool isDeviceHostSame()
 	{
 		return Mem::isDeviceHostSame();
 	}

src/memory/HeapMemory.hpp

@@ -204,7 +204,7 @@ public:
 	 * \return true if they are the same
 	 *
 	 */
-	static bool isDeviceHostSame()
+	constexpr static bool isDeviceHostSame()
 	{
 		return true;
 	}