Fix issue in kernarg metadata parsing due to early finalization

The logic to parse the kernel metadata is unaware that enabling
of early finalization could result in multiple code blobs in a
single .kernel section.  This teaches the HIP runtime to handle
that.

Change-Id: I1581b42f0da8b30233d7898014f7468728c1d489


[ROCm/hip commit: 19acf86cef]

projects/hip/src/program_state.cpp

@@ -590,14 +590,16 @@ unordered_map<string, vector<pair<size_t, size_t>>>& kernargs() {
     static once_flag f;
 
     call_once(f, []() {
-        for (auto&& blob : code_object_blobs()) {
-            stringstream tmp{std::string{
-                blob.second.front().cbegin(), blob.second.front().cend()}};
+        for (auto&& blobs_for_one_arch : code_object_blobs()) {
+            for (auto && blob : blobs_for_one_arch.second)  {
+                stringstream tmp{std::string{
+                    blob.cbegin(), blob.cend()}};
 
-            elfio reader;
-            if (!reader.load(tmp)) continue;
+                    elfio reader;
+                    if (!reader.load(tmp)) continue;
 
-            read_kernarg_metadata(reader, r);
+                    read_kernarg_metadata(reader, r);
+            }
         }
     });