arm64: define DMA_ERROR_CODE

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
CC: will.deacon@arm.com

Changes in v8:
- cast to dma_addr_t before returning.

1 file changed