arch/mips/alchemy/common/dbdma.c:632:7: error: ‘dma_default_coherent’ undeclared (first use in this function); did you mean ‘dma_free_coherent’? arch/mips/alchemy/common/dbdma.c:695:7: error: ‘dma_default_coherent’ undeclared (first use in this function); did you mean ‘dma_free_coherent’?