carma: remove unnecessary DMA_INTERRUPT capability

These drivers set the DMA_INTERRUPT capability bit when requesting a DMA
controller channel. This was historical, and is no longer needed.

Recent changes to the drivers/dma/fsldma.c driver have removed support
for this flag. This makes the carma drivers unable to find a DMA channel
with the required capabilities.

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ira W. Snyder <iws@ovro.caltech.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: Qiang Liu

drivers/misc/carma/carma-fpga-program.c

@@ -978,7 +978,6 @@ static int fpga_of_probe(struct platform_device *op)
 	dev_set_drvdata(priv->dev, priv);
 	dma_cap_zero(mask);
 	dma_cap_set(DMA_MEMCPY, mask);
-	dma_cap_set(DMA_INTERRUPT, mask);
 	dma_cap_set(DMA_SLAVE, mask);
 	dma_cap_set(DMA_SG, mask);
 

drivers/misc/carma/carma-fpga.c

@@ -666,7 +666,7 @@ static int data_submit_dma(struct fpga_device *priv, struct data_buf *buf)
 	src = SYS_FPGA_BLOCK;
 	tx = chan->device->device_prep_dma_memcpy(chan, dst, src,
 						  REG_BLOCK_SIZE,
-						  DMA_PREP_INTERRUPT);
+						  0);
 	if (!tx) {
 		dev_err(priv->dev, "unable to prep SYS-FPGA DMA\n");
 		return -ENOMEM;