Added patch to expose PKEY_AudioEndpoint_PhysicalSpeakers for Pulse

A patch to expose the device property PKEY_AudioEndpoint_PhysicalSpeakers for Pulse render devices, which is needed for surround sound. This does for winepulse what the upstream commit acccdce4c45d9e8db8f21deb2e4d764ad21edb9c does for winealsa.