[hip] Disable assert workaround for HCC on HIP-Clang.

- HIP-Clang follows the standard assert definition by providing
  `__assert_fail`.  But, `assert` macro is added as an HCC-specific
  workaround due to the missing implementation. Only enable that on the
  HCC compilation to avoid unexpected behaviors on HIP-Clang
  compilation.

Change-Id: I1c9a707baff9b85c30faef58c52ebfe07e3fc3fc

include/hip/hcc_detail/hip_runtime.h

@@ -121,7 +121,7 @@ extern int HIP_TRACE_API;
 #endif
 
 // TODO-HCC add a dummy implementation of assert, need to replace with a proper kernel exit call.
-#if __HIP_DEVICE_COMPILE__ == 1
+#if defined(__HCC__) && __HIP_DEVICE_COMPILE__ == 1
 #undef assert
 #define assert(COND)                                                                               \
     {                                                                                              \