iommu: dart: Support >64 stream IDs

T8110 DARTs have up to 256 SIDs, so we need to switch to a bitmap to
handle them properly.

Reviewed-by: Sven Peter <sven@svenpeter.dev>
Signed-off-by: Hector Martin <marcan@marcan.st>
Link: https://lore.kernel.org/r/20230113105029.26654-4-marcan@marcan.st


Signed-off-by: Joerg Roedel <jroedel@suse.de>