When getting a cmd irq during an ongoing data transfer
with dma, the dma job were never terminated. This is now
corrected.

Cc: <stable@vger.kernel.org>
Tested-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NPer Forlin <per.forlin@stericsson.com>
Signed-off-by: NUlf Hansson <ulf.hansson@stericsson.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>