SWDEV-520627 - include warp functions header for warpSize (#177)

Change-Id: Id3fff8f2722d521071ef0ff71b09fc365ef6fa82

[ROCm/clr commit: 588cf0fc69]

projects/clr/hipamd/include/hip/amd_detail/amd_hip_bf16.h

@@ -114,6 +114,7 @@
 #include "device_library_decls.h"  // ocml conversion functions
 #include "math_fwd.h"  // ocml device functions
 #if defined(__clang__) and defined(__HIP__)
+#include <hip/amd_detail/amd_warp_functions.h>       // define warpSize
 #include <hip/amd_detail/amd_warp_sync_functions.h>  // Sync functions
 #endif
 #endif                // !defined(__HIPCC_RTC__)