hipgenisa.sh: handle extern C on HCC path

Change-Id: I2daf09d2cb323ab34653988b668e8bd89f6db94a


[ROCm/clr commit: 16c61fd6e2]

projects/clr/hipamd/bin/hipgenisa.sh

@@ -22,7 +22,8 @@ HIP_PATH="$( command cd -P "$( dirname "$SOURCE" )/.." && pwd )"
 export KMDUMPISA=1
 export KMDUMPLLVM=1
 mkdir /tmp/hipgenisa
-cp $FILE_NAMES $FILE_NAMES.kernel.tmp.cpp
+#cp $FILE_NAMES $FILE_NAMES.kernel.tmp.cpp
+sed 's/extern \+"C" \+//g' $FILE_NAMES > $FILE_NAMES.kernel.tmp.cpp
 echo "
 int main(){}
 " >> $FILE_NAMES.kernel.tmp.cpp