Staging: hv: Get rid of the status field from struct hv_storvsc_request

Staging: hv: Get rid of the status field from struct hv_storvsc_request

In preparation of consolidating all I/O request state,
get rid of the  status field from struct hv_storvsc_request
and instead use the state in the struct vmscsi_request directly.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Abhishek Kane <v-abkane@microsoft.com>
Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>