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Blackfin arch: Add definition of dma_mapping_error

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

authored by Sonic Zhang and committed by Bryan Wu 334280ff b9b71276

+2
unified split
+2
include/asm-blackfin/dma-mapping.h
··· 15 #define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f) 16 #define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h) 17 18 /* 19 * Map a single buffer of the indicated size for DMA in streaming mode. 20 * The 32-bit bus address to use is returned.
··· 15 #define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f) 16 #define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h) 17 18 + #define dma_mapping_error 19 + 20 /* 21 * Map a single buffer of the indicated size for DMA in streaming mode. 22 * The 32-bit bus address to use is returned.