- In case of AXI-DMA, the DMA descriptors need to be 8 bytes aligned
lldesc_t do not satify this condition thus we need to replace it with
dma_descriptor_t (align(4) and align(8)) in esp_crypto_shared_gdma.
- Added new shared gdma start API that supports the dma_descriptor_t
DMA descriptor.
- Added some generic dma descriptor macros and helper functions
- replace lldesc_t with dma_descriptor_t