Drivers: hv: fcopy: set .owner reference for file operations

Drivers: hv: fcopy: set .owner reference for file operations

Get an additional reference otherwise a crash is observed when hv_utils module is being unloaded while
fcopy daemon is still running. .owner gives us an additional reference when
someone holds a descriptor for the device.

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 3f0dccf86cab38d96b67efdfc944954f5490d057)

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