Check if ocloc in PATH before using it (#3212)

Part of #3177.

When running with pip dependencies, `ocloc` may not be present in
`PATH`.

Signed-off-by: Anatoly Myachev <[email protected]>

Author: anmyachev

third_party/intel/backend/compiler.py

@@ -156,7 +156,7 @@ def parse_target(self, tgt_prop) -> dict:
         dev_prop['has_bfloat16_conversions'] = tgt_prop.get('has_bfloat16_conversions', True)
 
         device_arch = self.parse_device_arch(tgt_prop.get('architecture', 0))
-        if device_arch:
+        if device_arch and shutil.which('ocloc'):
             if device_arch in self.device_props:
                 dev_prop.update(self.device_props[device_arch])
                 return dev_prop