Staging: hv: Use generic device_driver remove function

In preparation for moving all the state from struct driver_context
to struct hv_driver, eliminate the remove() function from
struct driver_context and use generic device_driver remove()
function.
Signed-off-by: NK. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: NAbhishek Kane <v-abkane@microsoft.com>
Signed-off-by: NHaiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: NHank Janssen <hjanssen@microsoft.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/staging/hv/blkvsc_drv.c

@@ -187,7 +187,7 @@ static int blkvsc_drv_init(int (*drv_init)(struct hv_driver *drv))
 	       sizeof(struct hv_guid));
 
 	drv_ctx->driver.probe = blkvsc_probe;
-	drv_ctx->remove = blkvsc_remove;
+	drv_ctx->driver.remove = blkvsc_remove;
 	drv_ctx->shutdown = blkvsc_shutdown;
 
 	/* The driver belongs to vmbus */

drivers/staging/hv/hv_mouse.c

@@ -1022,7 +1022,7 @@ static int __init mousevsc_init(void)
 	       sizeof(struct hv_guid));
 
 	drv_ctx->driver.probe = mousevsc_probe;
-	drv_ctx->remove = mousevsc_remove;
+	drv_ctx->driver.remove = mousevsc_remove;
 
 	/* The driver belongs to vmbus */
 	vmbus_child_driver_register(drv_ctx);

drivers/staging/hv/netvsc_drv.c

@@ -512,7 +512,7 @@ static int netvsc_drv_init(int (*drv_init)(struct hv_driver *drv))
 	       sizeof(struct hv_guid));
 
 	drv_ctx->driver.probe = netvsc_probe;
-	drv_ctx->remove = netvsc_remove;
+	drv_ctx->driver.remove = netvsc_remove;
 
 	/* The driver belongs to vmbus */
 	ret = vmbus_child_driver_register(drv_ctx);

drivers/staging/hv/storvsc_drv.c

@@ -165,7 +165,7 @@ static int storvsc_drv_init(int (*drv_init)(struct hv_driver *drv))
 	       sizeof(struct hv_guid));
 
 	drv_ctx->driver.probe = storvsc_probe;
-	drv_ctx->remove = storvsc_remove;
+	drv_ctx->driver.remove = storvsc_remove;
 
 	/* The driver belongs to vmbus */
 	ret = vmbus_child_driver_register(drv_ctx);

drivers/staging/hv/vmbus_drv.c

@@ -964,8 +964,8 @@ static int vmbus_remove(struct device *child_device)
 		 * Let the specific open-source driver handles the removal if
 		 * it can
 		 */
-		if (driver_ctx->remove) {
-			ret = driver_ctx->remove(child_device);
+		if (driver_ctx->driver.remove) {
+			ret = driver_ctx->driver.remove(child_device);
 		} else {
 			DPRINT_ERR(VMBUS_DRV,
 				   "remove() method not set for driver - %s",