dmaengine: jz4740: enable COMPILE_TEST

To get more coverage, enable COMPILE_TEST for this driver.
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

drivers/dma/Kconfig

@@ -114,7 +114,7 @@ config DMA_BCM2835
 
 config DMA_JZ4740
 	tristate "JZ4740 DMA support"
-	depends on MACH_JZ4740
+	depends on MACH_JZ4740 || COMPILE_TEST
 	select DMA_ENGINE
 	select DMA_VIRTUAL_CHANNELS