make dma_addressing_limited work for memory encryption setups v2

From: Christoph Hellwig
Date: Wed Dec 04 2019 - 08:03:49 EST

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Hi all,

this little series fixes dma_addressing_limited to return true for
systems that use bounce buffers due to memory encryption.

Changes since v1:
- take SWIOTLB_FORCE into account

Next message: Christoph Hellwig: "[PATCH 1/2] dma-mapping: move dma_addressing_limited out of line"
Previous message: Pavel Machek: "Re: [PATCH 4.19 073/321] bus: ti-sysc: Check for no-reset and no-idle flags at the child level"
Next in thread: Christoph Hellwig: "[PATCH 1/2] dma-mapping: move dma_addressing_limited out of line"
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