DMA on Intel Quark SoC is a part of UART IP block. Enable it.
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: NBryan O'Donoghue <pure.logic@nexus-software.ie>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>