Prepare an NvSciIpc Endpoint for read/write

To enable read/write on an endpoint, the following steps must be completed.

1. The application must open the endpoint.
2. Get the endpoint information, such as the number of frames and each frame size. This is important as only single frames can be read/written at a given time.
3. Get the FD associated with the endpoint. This is required to handle event notifications.
4. Reset the endpoint. This is important as it ensures that the endpoint is not reading/writing any stale data (for example, from the previous start or instance).

Prepare an NvSciIpc Endpoint for read/write

NvSciIpcEndpoint ipcEndpoint;
struct NvSciIpcEndpointInfo info;
int32_t fd;
NvSciError err;
err = NvSciIpcOpenEndpoint("ipc_endpoint", &ipcEndpoint);
if (err != NvSciError_Success) {
    goto fail;
}
err = NvSciIpcGetLinuxEventFd(ipcEndpoint, &fd);
if (err != NvSciError_Success) {
    goto fail;
}
err = NvSciIpcGetEndpointInfo(ipcEndpoint, &info);
if (err != NvSciError_Success) {
    goto fail;
}
printf("Endpointinfo: nframes = %d, frame_size = %d\n", info.nframes, info.frame_size);
err = NvSciIpcResetEndpointSafe(ipcEndpoint);
if (err != NvSciError_Success) {
    goto fail;
}