swiotlb: unexport is_swiotlb_active

Drivers have no business looking at dma-mapping or swiotlb internals.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Juergen Gross <jgross@suse.com>
This commit is contained in:
Christoph Hellwig 2023-04-07 08:34:36 +02:00
commit 42e584a985