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* waf: update to 2.0.23
* dma-heap: Add support for uncached dma-heap memory
imx_dma_buffer_dma_heap_allocator_new_from_fd() is
a new function that partially deprecates the dma_heap_fd
argument of imx_dma_buffer_dma_heap_allocator_new().
* Add sync access functions to ensure cache
coherency when allocating cached DMA memory;
only done by dma-heap allocator at this time
* Relax buffer mapping flags checks
* Add API functions to retrieve dma-heap / ION FDs
Signed-off-by: Carlos Rafael Giani <crg7475@mailbox.org>
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