dma-buf: DMABUF_MOVE_NOTIFY should depend on DMA_SHARED_BUFFER

Move notify between drivers is an option of DMA-BUF.  Enabling
DMABUF_MOVE_NOTIFY without DMA_SHARED_BUFFER does not have any impact,
as drivers/dma-buf/ is not entered during the build when
DMA_SHARED_BUFFER is disabled.

Fixes: bb42df46 ("dma-buf: add dynamic DMA-buf handling v15")
Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210902124913.2698760-2-geert@linux-m68k.org

drivers/dma-buf/Kconfig

@@ -42,6 +42,7 @@ config UDMABUF
 config DMABUF_MOVE_NOTIFY
 	bool "Move notify between drivers (EXPERIMENTAL)"
 	default n
+	depends on DMA_SHARED_BUFFER
 	help
 	  Don't pin buffers if the dynamic DMA-buf interface is available on
 	  both the exporter as well as the importer. This fixes a security