tests: drivers: dma: adapt test applications on stm32wb55 nucleo board

The dma test applications for MEM-to-MEM transfers are modified
to run on the stm32wb55 with a DMAMUX
loop_transfer on any CONFIG_DMA_LOOP_TRANSFER_CHANNEL_NR from 0 to 13
chan_blen_trasnfer on CONFIG_DMA_TRANSFER_CHANNEL_NR_0 from 0 to 13
and on CONFIG_DMA_TRANSFER_CHANNEL_NR_1 from 0 to 13

Signed-off-by: Francois Ramu <[email protected]>

Author: FRASTM

tests/drivers/dma/chan_blen_transfer/boards/nucleo_wb55rg.conf

@@ -0,0 +1,3 @@
+CONFIG_DMA_TRANSFER_DRV_NAME="DMAMUX_1"
+CONFIG_DMA_TRANSFER_CHANNEL_NR_0=6
+CONFIG_DMA_TRANSFER_CHANNEL_NR_1=10

tests/drivers/dma/chan_blen_transfer/boards/nucleo_wb55rg.overlay

@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2020 STMicroelectronics
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+&dma1 {
+	status = "okay";
+};
+
+&dma2 {
+	status = "okay";
+};
+
+&dmamux1 {
+	status = "okay";
+};

tests/drivers/dma/loop_transfer/boards/nucleo_wb55rg.conf

@@ -0,0 +1,2 @@
+CONFIG_DMA_LOOP_TRANSFER_DRV_NAME="DMAMUX_1"
+CONFIG_DMA_LOOP_TRANSFER_CHANNEL_NR=11

tests/drivers/dma/loop_transfer/boards/nucleo_wb55rg.overlay

@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2020 STMicroelectronics
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+&dma1 {
+	status = "okay";
+};
+
+&dma2 {
+	status = "okay";
+};
+
+&dmamux1 {
+	status = "okay";
+};