dmaengine: ti: k3-udma: Disable memcopy via MCU NAVSS on am654

Trace of a test for DMA memcpy domains slipped into the glue layer commit.
The memcpy support should be disabled on the MCU UDMAP.

Fixes: d7024191 ("dmaengine: ti: k3-udma: Add glue layer for non DMAengine users")
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/20200327144228.11101-1-peter.ujfalusi@ti.com


Signed-off-by: Vinod Koul <vkoul@kernel.org>