xillybus: XILLYBUS_OF should depend on HAS_DMA

If NO_DMA=y:

drivers/built-in.o: In function `xilly_of_unmap':
xillybus_of.c:(.text+0xa860e): undefined reference to `dma_unmap_single'
drivers/built-in.o: In function `xilly_map_single_of':
xillybus_of.c:(.text+0xa8668): undefined reference to `dma_map_single'
xillybus_of.c:(.text+0xa8676): undefined reference to `dma_mapping_error'
xillybus_of.c:(.text+0xa86ca): undefined reference to `dma_unmap_single'
drivers/built-in.o: In function `xilly_dma_sync_single_for_device_of':
xillybus_of.c:(.text+0xa8700): undefined reference to `dma_sync_single_for_cpu'
drivers/built-in.o: In function `xilly_dma_sync_single_for_cpu_of':
xillybus_of.c:(.text+0xa8726): undefined reference to `dma_sync_single_for_cpu'

Signed-off-by: Geert Uytterhoeven <[e-mail]>
Acked-by: Eli Billauer <[e-mail]>
--
v2:
- Add Acked-by, send to char and misc drivers maintainers.
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/char/xillybus/Kconfig

···
 
 config XILLYBUS_OF
 	tristate "Xillybus over Device Tree"
-	depends on OF_ADDRESS && OF_IRQ
+	depends on OF_ADDRESS && OF_IRQ && HAS_DMA
 	help
 	  Set to M if you want Xillybus to find its resources from the
 	  Open Firmware Flattened Device Tree. If the target is an embedded