virtio: Explicitly request queue sizes where needed.

Ensure that allocated queues can hold the amount of descriptors that
were previously communicated to DMAResources in virtio_block and
virtio_scsi. The queue allocations will now fail with B_BUFFER_OVERFLOW
if the requested size cannot be provided.

When requestedSizes are set to 0, no requirement is placed and the queue
is sized to its advertised maximum. The requestedSizes argument can be
NULL which implies all 0.

Change-Id: Ifb1e032d48f8c07aedfe2bf941f32783842c8c12
Reviewed-on: https://review.haiku-os.org/c/haiku/+/8220
Reviewed-by: Jérôme Duval <[email protected]>

headers/private/virtio/virtio.h

@@ -117,7 +117,7 @@ typedef struct {
 		const void* buffer, size_t bufferSize);
 
 	status_t (*alloc_queues)(virtio_device cookie, size_t count,
-		virtio_queue* queues);
+		virtio_queue* queues, uint16* requestedSizes);
 
 	void (*free_queues)(virtio_device cookie);