try to run arm-iar with circleci with new token (#2890)

* try to run arm-iar with circleci with new token
* limit iar ci parallel build to 4 for medium+ and 6 for large
* add hil-hfp to compile and test with IAR

tools/build.py

@@ -109,7 +109,14 @@ def cmake_board(board, toolchain, build_flags_on):
         rcmd = run_cmd(f'cmake examples -B {build_dir} -G "Ninja" -DBOARD={board} -DCMAKE_BUILD_TYPE=MinSizeRel '
                        f'-DTOOLCHAIN={toolchain} {build_flags}')
         if rcmd.returncode == 0:
-            rcmd = run_cmd(f"cmake --build {build_dir}")
+            cmd = f"cmake --build {build_dir}"
+            # Due to IAR capability, limit parallel build to 4 (medium+) or 6 (large) docker
+            if toolchain == 'iar' and os.getenv('CIRCLECI'):
+                if 'large' in os.getenv('CIRCLE_JOB'):
+                    cmd += ' --parallel 6'
+                else:
+                    cmd += ' --parallel 4'
+            rcmd = run_cmd(cmd)
         ret[0 if rcmd.returncode == 0 else 1] += 1
 
     example = 'all'