linux-phytec-fsl

amba-pl011: fix build error if CONFIG_DMA_ENGINE is not enabled

Following patch will fix build error if CONFIG_DMA_ENGINE is unset.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Chanho Min <chanho.min@lge.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>