SWDEV-283958 Workaround for unnamed structs

CppHeaderParser has limited support for unnamed structs. It leaves the
name empty so this results in classes (a.k.a structs) having trailing '::'
characters, also giving no way to distingush two unnamed structs at the
same level of nesting. An example are the inner structs of
hipExternalSemaphoreSignalParams. The workaround consists in skipping
over these, so they are not generated in the output header file
which lists all ostream ops<<. Only the inner unnamed structs are skipped,
the rest is processed as it should.

Change-Id: I17439c46095469b7adb7aee0b0f0b3d234aabc11

script/gen_ostream_ops.py

@@ -147,6 +147,7 @@ def gen_cppheader(infilepath, outfilepath, rank):
       output_filename_h.write("// End of basic ostream ops\n\n")
 
     for c in cppHeader.classes:
+        if c[-2] == ':' and c[-1] == ':': continue #ostream operator cannot be overloaded for anonymous struct therefore it is skipped
         if "union" in c:
             continue
         if c in structs_analyzed: