misc: fastrpc: select CONFIG_DMA_SHARED_BUFFER
Fastrpc is a dma buf exporter as well, so select the corresponding DMA_SHARED_BUFFER config to fix below compilation errors on platforms without this config. ld: drivers/misc/fastrpc.o: in function 'fastrpc_free_map': fastrpc.c:(.text+0xbe): undefined reference to 'dma_buf_unmap_attachment' ld: fastrpc.c:(.text+0xcb): undefined reference to 'dma_buf_detach' ld: fastrpc.c:(.text+0xd4): undefined reference to 'dma_buf_put' ld: drivers/misc/fastrpc.o: in function 'fastrpc_map_create': fastrpc.c:(.text+0xb2b): undefined reference to 'dma_buf_get' ld: fastrpc.c:(.text+0xb47): undefined reference to 'dma_buf_attach' ld: fastrpc.c:(.text+0xb61): undefined reference to 'dma_buf_map_attachment' ld: fastrpc.c:(.text+0xc36): undefined reference to 'dma_buf_put' ld: fastrpc.c:(.text+0xc48): undefined reference to 'dma_buf_detach' ld: drivers/misc/fastrpc.o: in function 'fastrpc_device_ioctl': fastrpc.c:(.text+0x1756): undefined reference to 'dma_buf_get' ld: fastrpc.c:(.text+0x1776): undefined reference to 'dma_buf_put' ld: fastrpc.c:(.text+0x1780): undefined reference to 'dma_buf_put' ld: fastrpc.c:(.text+0x1abf): undefined reference to 'dma_buf_export' ld: fastrpc.c:(.text+0x1ae7): undefined reference to 'dma_buf_fd' ld: fastrpc.c:(.text+0x1cb5): undefined reference to 'dma_buf_put' ld: fastrpc.c:(.text+0x1cca): undefined reference to 'dma_buf_put' Reported-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Acked-by: Randy Dunlap <rdunlap@infradead.org> # build-tested Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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