cereal: fixup build deps

cereal/SConscript

@@ -1,19 +1,20 @@
-Import('env', 'common', 'msgq')
+Import('env', 'msgq')
 
 cereal_dir = Dir('.')
 gen_dir = Dir('gen')
 
 # Build cereal
 schema_files = ['log.capnp', 'car.capnp', 'legacy.capnp', 'custom.capnp']
-env.Command([f'gen/cpp/{s}.c++' for s in schema_files] + [f'gen/cpp/{s}.h' for s in schema_files],
+schema_cpp = [f'gen/cpp/{s}.c++' for s in schema_files] + [f'gen/cpp/{s}.h' for s in schema_files]
+env.Command(schema_cpp,
             schema_files,
             f"capnpc --src-prefix={cereal_dir.path} $SOURCES -o c++:{gen_dir.path}/cpp/")
 
-cereal = env.Library('cereal', [f'gen/cpp/{s}.c++' for s in schema_files])
+cereal = env.Library('cereal', schema_cpp)
 
 # Build messaging
 services_h = env.Command(['services.h'], ['services.py'], 'python3 ' + cereal_dir.path + '/services.py > $TARGET')
-env.Program('messaging/bridge', ['messaging/bridge.cc', 'messaging/msgq_to_zmq.cc'], LIBS=[msgq, common, 'pthread'])
+env.Program('messaging/bridge', ['messaging/bridge.cc', 'messaging/msgq_to_zmq.cc'], LIBS=[msgq, 'zmq', 'pthread'])
 
 socketmaster = env.Library('socketmaster', ['messaging/socketmaster.cc'])