avr32: at32ap700x: don't rely on default DMA masters

In future we are going to remove the defaults of AHB masters from dw_dmac
driver. It means each user have to supply proper source and destination masters
by itself explicitly.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

arch/avr32/mach-at32ap/at32ap700x.c

@@ -1360,6 +1360,8 @@ at32_add_device_mci(unsigned int id, struct mci_platform_data *data)
 				| DWC_CFGH_DST_PER(1));
 	slave->sdata.cfg_lo &= ~(DWC_CFGL_HS_DST_POL
 				| DWC_CFGL_HS_SRC_POL);
+	slave->sdata.src_master = 1;
+	slave->sdata.dst_master = 0;
 
 	data->dma_slave = slave;