tests: drivers: spi: enable tests on ucans32k1sic

Add overlays to enable SPI tests on ucans32k1sic board.

Signed-off-by: Manuel Argüelles <[email protected]>

Author: manuargue

tests/drivers/spi/spi_loopback/boards/ucans32k1sic.overlay

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2023 NXP
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/* Short P1.3 (SPI0/MISO) with P1.4 (SPI0/MOSI) */
+
+&lpspi0 {
+	slow@0 {
+		compatible = "test-spi-loopback-slow";
+		reg = <0>;
+		spi-max-frequency = <500000>;
+	};
+	fast@0 {
+		compatible = "test-spi-loopback-fast";
+		reg = <0>;
+		spi-max-frequency = <9000000>;
+	};
+};