Change rx_size type which originally should have been uint32_t. This
also requires a change in the function prototype.
Also change the return type of virtio_9p_load() to silence another gcc
warning
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>