dmaengine: jz4780: enable COMPILE_TEST

To get more coverage, enable COMPILE_TEST for this driver.
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

drivers/dma/Kconfig

@@ -120,7 +120,7 @@ config DMA_JZ4740
 
 config DMA_JZ4780
 	tristate "JZ4780 DMA support"
-	depends on MACH_JZ4780
+	depends on MACH_JZ4780 || COMPILE_TEST
 	select DMA_ENGINE
 	select DMA_VIRTUAL_CHANNELS
 	help