tests: dma: Enable scatter_gather test on RT595 EVK

Enable scatter gather test on NXP RT595 EVK

Signed-off-by: Mahesh Mahadevan <mahesh.mahadevan@nxp.com>
diff --git a/tests/drivers/dma/scatter_gather/boards/mimxrt595_evk_cm33.overlay b/tests/drivers/dma/scatter_gather/boards/mimxrt595_evk_cm33.overlay
new file mode 100644
index 0000000..c3c3e91
--- /dev/null
+++ b/tests/drivers/dma/scatter_gather/boards/mimxrt595_evk_cm33.overlay
@@ -0,0 +1,11 @@
+/*
+ * Copyright 2023 NXP Semiconductor
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/ {
+	aliases {
+		dma0 = &dma0;
+	};
+};