staging: vc04_services: Drop VCHI_SERVICE_INIT and SERVICE_INFO_T

// Opaque handle for a server or client

typedef struct opaque_vchi_service_handle_t *VCHI_SERVICE_HANDLE_T;

// Service registration & startup

typedef void (*VCHI_SERVICE_INIT)(VCHI_INSTANCE_T initialise_instance, VCHI_CONNECTION_T **connections, uint32_t num_connections);

typedef struct service_info_tag {

   const char * const vll_filename; /* VLL to load to start this service. This is an empty string if VLL is "static" */

   VCHI_SERVICE_INIT init;          /* Service initialisation function */

   void *vll_handle;                /* VLL handle; NULL when unloaded or a "static VLL" in build */

} SERVICE_INFO_T;

/******************************************************************************

 Global funcs - implementation is specific to which side you are on (local / remote)

 *****************************************************************************/