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Export dma_contiguous_default_area so dev_get_cma_area() can be called from a module. This allows the CMA dma-buf heap to be configured and built as a module. Signed-off-by: John Stultz <john.stultz@linaro.org> Change-Id: I8ae944c147ff83dcd8d42a39efa6769dae4039b7 Bug: 155218010 Link: https://lore.kernel.org/lkml/20191025234834.28214-2-john.stultz@linaro.org/ Signed-off-by: Hridya Valsaraju <hridya@google.com>