SWDEV-375004 - Fix rocprim test failure

- For !__HIPCC_RTC__ case, operator<<(std::ostream& os, const hip_bfloat16& bf16) calls itself in endless recursion
- Convert hip_bfloat16 to float to fix this

Change-Id: I252a656817550caf43c587cebf461474f12b8c0c

hipamd/include/hip/amd_detail/amd_hip_bfloat16.h

@@ -32,10 +32,8 @@
 #include "host_defines.h"
 #if defined(__HIPCC_RTC__)
     #define __HOST_DEVICE__ __device__
-    #define HIP_OSTREAM __hip_internal::ostream
 #else
     #define __HOST_DEVICE__ __host__ __device__
-    #define HIP_OSTREAM std::ostream
 #endif
 
 #if __cplusplus < 201103L || !defined(__HIPCC__)
@@ -181,12 +179,12 @@ static_assert(__hip_internal::is_trivial<hip_bfloat16>{},
 static_assert(sizeof(hip_bfloat16) == sizeof(hip_bfloat16_public)
                   && offsetof(hip_bfloat16, data) == offsetof(hip_bfloat16_public, data),
               "internal hip_bfloat16 does not match public hip_bfloat16");
-#endif
 
-inline HIP_OSTREAM& operator<<(HIP_OSTREAM& os, const hip_bfloat16& bf16)
+inline std::ostream& operator<<(std::ostream& os, const hip_bfloat16& bf16)
 {
-    return os << bf16;
+  return os << float(bf16);
 }
+#endif
 
 inline __HOST_DEVICE__ hip_bfloat16 operator+(hip_bfloat16 a)
 {