dma-mapping: add the missing ARCH_HAS_SYNC_DMA_FOR_CPU_ALL declaration

The patch adding the infrastructure failed to actually add the symbol
declaration, oops..

Fixes: faef87723a ("dma-noncoherent: add a arch_sync_dma_for_cpu_all hook")
Signed-off-by: Christoph Hellwig <hch@lst.de>

diff --git a/kernel/dma/Kconfig b/kernel/dma/Kconfig
index 9bd54304446f8b477a61a799a2d75136672548bd..1b1d63b3634b580cf6b29384e162f76b28e05102 100644 (file)
--- a/kernel/dma/Kconfig
+++ b/kernel/dma/Kconfig
@@ -23,6 +23,9 @@ config ARCH_HAS_SYNC_DMA_FOR_CPU
        bool
        select NEED_DMA_MAP_STATE
 
+config ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
+       bool
+
 config DMA_DIRECT_OPS
        bool
        depends on HAS_DMA