Add compiler-rt library for __fp16 and _Float16

Similar to HCC, link with compiler-rt to support __fp16 and _Float16 type conversions in ONNX models. This should resolve SWDEV-238491.

Change-Id: Iad8dcff568831719f501f562a04023326ae8036c

bin/hipcc

@@ -840,6 +840,8 @@ if ($HIP_PLATFORM eq "hcc" and $HIP_COMPILER eq "clang") {
       } else {
         $toolArgs .= " -Wl,--enable-new-dtags -Wl,--rpath=$HIP_LIB_PATH:$ROCM_PATH/lib -lhip_hcc ";
       }
+      # To support __fp16 and _Float16, explicitly link with compiler-rt
+      $toolArgs .= " -L$HIP_CLANG_PATH/../lib/clang/$HIP_CLANG_VERSION/lib/linux -lclang_rt.builtins-x86_64 "
     }
 }