Drivers: hv: fcopy: convert to hv_utils_transport

Drivers: hv: fcopy: convert to hv_utils_transport

Unify the code with the recently introduced hv_utils_transport. Netlink
communication is disabled for fcopy.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Tested-by: Alex Ng <alexng@microsoft.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit c7e490fc23eb44e6ae6ab41b9fd450e361f8a01f)

Orabug: 21886720
Signed-off-by: Jason Luo <zhangqing.luo@oracle.com>